The goal of the Borg, in most cases, is to completely assimilate each species by incorporating their knowledge and technology into the unified Borg Collective. One by one, each living being is converted into Borg Drones. In many cases, all that remains of an assimilated civilization is the memory of its unique contributions that now resides only within the accumulated knowledge of the Borg. That and the numerical species designation. Often even the name is lost, forgotten or deleted as irrelevant. Conversely, the species designations give a sense of the long and terrible history of the Borg and the thousands of species they have encountered and absorbed.
Designations	Quadrant	Race Name/Description	Source
13	Delta Quadrant	Tuktak/Ku:	STV #16: Seven of Nine
116	Delta Quadrant	A technologically sophisticated humanoid civilization from the Delta Quadrant. Members of this species were gifted linguists, some knowing several thousand languages. The Borg first tried to assimilate Species 116 many centuries ago, but they were outwitted and eluded until 2374, when the Borg abducted all but about 20,000 individuals. Arturis was a member of Species 116 who had escaped assimilation but later was captured after his plans to lure the U.S.S. Voyager to the Borg failed.	"Hope and Fear"
125		The species the Borg Queen came from. No other information about this race is known.	"Dark Frontier, Part II"
149		Civilization assimilated by the Borg that had advanced medical technology, including a method for reversing cellular necrosis, thus allowing the Borg to reactivate drones as much as 73 hours after "death." This technique was used by Seven of Nine aboard the U.S.S. Voyager to revive Neelix.	"Mortal Coil"
180	Alpha Quadrant	Ferengi: It is not known why the Ferengi, an Alpha Quadrant race, has such a low species number, which would imply that they were encountered and catalogued very early in the Borg's existence.	"Infinite Regress"
218	Delta Quadrant	Talaxian: catalogued by the Borg when a small freighter containing a crew of 39 was taken in the Dolmine Sector. The Talaxians were easily assimilated, and their dense musculature made them excellent drones.	"The Raven"
259	Galactic Cluster 3	Technologically advanced omnicordial lifeform that inhabits Galactic Cluster 3. This species developed the pattern-duplication design that is at the heart of the Borg autonomous regeneration sequencers.	"The Gift"
262	Delta Quadrant	A primitive culture assimilated by the Borg around 2145. Their oral history referred to a powerful substance which could "burn the sky." The Borg were intrigued, and they followed a trail of myth through several cultures until it learned about the Omega molecule.	"The Omega Directive"
263	Delta Quadrant	A primitive culture assimilated by the Borg around 2145. Species 263 believed the Omega molecule was a drop of blood from their creator.	"The Omega Directive"
312	Delta Quadrant	A civilization assimilated by the Borg hundreds of years ago. Species 312 developed tetrion-flux technology that could create an energy barrier undetectable by conventional sensors. Apparently this species had constructed such an energy barrier on the planet Ledos over the southern sub-continent in order to protect the primitive Ventu people from intrusion by the more advanced Ledosians. The energy barrier was impenetrable by the Ledosians until crewmembers from the U.S.S. Voyager found a way to break through it.	"Natural Law"
329	Delta Quadrant	Kazon: The Borg encountered a Kazon colony in the Gand Sector, Grid 6920, but considered the race unworthy of assimilation because their biological and technological distinctiveness was unremarkable. Why assimilate a species that would detract from perfection?	"Mortal Coil"
407	Delta Quadrant	Lennli: Borg designation for a humanoid species with seven fingers on each hand. An artful and cultured society, 407 were assimilated without heavy resistance. Druana belonged to Species 407 before she was assimilated.	STV #16: Seven of Nine
521	Delta Quadrant	Shivolian: A female member of this species visited the U.S.S. Voyager while the ship was docked at the Markonian Outpost in 2376.	"Survival Instinct"
571		A species that worships the supernatural deity Brothara, who frowns upon the desecration of dead bodies. P'Chan, whose Borg designation was 4 of 9, is from this species.	"Survival Instinct"
689	Delta Quadrant	Norcadian: No other information about this race is known.	"Ashes to Ashes"
1811	Delta Quadrant	Borg designation for a Delta Quadrant race. Species 1811 was dismissed as unworthy to join the collective as they would have weakened the whole. They were unable to adapt to assimilation and died quickly as drones.	STV #16: Seven of Nine
2461	Delta Quadrant	Brunali: The Brunali race, of the Delta Quadrant. The Brunali world was located near a Borg transwarp conduit and had been attacked three times in 10 years; each time the Borg wiped out the society they had worked hard to rebuild. This race had developed sophisticated techniques in agricultural genetics to allow them to grow crops in inhospitable environments, and they used the same science to engineer an anti-Borg pathogen that they implanted into the genetic code of some of their children, including Icheb.	"Child's Play"
2822	Delta Quadrant	Borg designation for a Delta Quadrant race. Species 2822 thrived on opportunity, and survive many disasters with ingenuity and skill. Members of this race were added to the Borg collective.	STV #16: Seven of Nine
3105	Delta Quadrant	Rhawn: A humanoid species whose skin, hair and teeth are colored purple. Their planet was destroyed when their two suns collided and the species traveled out into space to find a new home.
3259	Alpha Quadrant	Vulcan: Their enlarged neo-cortex produces superior analytical abilities.	"The Raven"
4228	Delta Quadrant	Hazari: Technologically advanced, extremely violent, the Hazari make excellent tactical drones. Other races often hire them as bounty hunters.	"Think Tank"
4774	Delta Quadrant	Skedan: A race of telepaths with a protective ridge of bone on the skull that protrudes down the back. Non-aggressive. Resistance was minimal. Physically they do not make good drones but their telepathic abilities were added to the technological and biological distinctiveness of the Borg.	STV#16: Seven of Nine
5174	Delta Quadrant	A spacefaring civilization. The Borg once encountered a small ship of this species where the occupants were gutted in a complete osteomy, their entire skeletons surgically removed along with musculature, ligaments, tendons and internal organs. The Borg never determined the perpetrators, considering it irrelevant, but it was apparently the Hirogen.	"Hunters"
5618	Alpha Quadrant	Human: Considered by the Borg to possess below-average cranial capacity, minimal redundant systems and limited regenerative abilities. But several attempts to assimilate this species have failed.	"Dark Frontier, Part II"
5973	Galactic Cluster 8	Multi-spectrum particle life forms.	"The Haunting of Deck Twelve"
6291	Alpha Quadrant	Yridian: The Borg had determined that the Yridians were extinct, as had the Federation, but exo-biologist Rudy Ransom made first contact with the race, thereby proving otherwise. (Ransom was promoted to captain and given command of the Starship Equinox as a result of this accomplishment).	"Equinox, Part I"
6339	Delta Quadrant Grid 124	Humanoid, warp-capable species that originated in Grid 124, Octant-22-theta. They first encountered the Borg about 2371, and in four years 11 billion of their people were assimilated. In 2375 the Collective intercepted one of their last remaining shuttlecraft and assimilated the 13 aboard. It turns out those 13 individuals were sacrificing themselves, as they were carrying a synthetic pathogen that the race had developed to retaliate against the Borg. That virus was originally a biological agent but mutated and attacked the Borg Cube's Vinculum as it would living cells, and through the Vinculum it was passed on to all drones on the Cube. The pathogen caused thousands of drones to randomly manifest hundreds of thousands of personalities, leading to chaos among the drones and ultimately the destruction of their Cube.	"Infinite Regress"
6961	Alpha Quadrant	Ktarian: A drone originating from this species was studied close up on a Cube by Magnus Hansen.	"Dark Frontier, Part II"
8472	Delta Quadrant Fluidic Space	Species 8472: Sophisticated lifeform from an extra-dimensional realm of fluidic space. Species 8472 has an extremely dense genetic structure and an extraordinarily powerful immune system; almost anything that penetrates their cells is instantly destroyed, including chemical, biological, or technological intruders. In late 2373 the Borg discovered fluidic space and learned that Species 8472 possess organic spacecraft and a biogenically engineered weapons technology that was superior to anything known to the Borg. Seeking to assimilate this civilization and its technology, the Borg launched an attack on the fluidic space realm, only to be repulsed by Species 8472. Shortly thereafter, 8472 launched a retaliatory strike, sending hundreds of powerful bioships into the Delta Quadrant with the goal of eliminating all lifeforms from the galaxy, destroying entire planets and fleets in Borg-occupied space. The 8472 assault was halted when the U.S.S. Voyager collaborated with the Borg to use new nanoprobe technology the crew had developed, a weapon against which the species had no effective defense. It was in the midst of the 8472 battle that Seven of Nine came aboard Voyager and was later severed from the Hive.	"Scorpion, Part I"
9341	Beta Quadrant	Nonhumanoid; unassimilatable; spaceborne; large mothers infest entire sectors with young	Star Trek: Armada II
10026	Delta Quadrant	Humanoid, A species from Grid 532 whosweapons could penetrate Borg shields. A population of 392,000 that was assimilated in mid-2375. The Borg Queen tried to force Seven of Nine to help assimilate this race, but instead she arranged the escape of four individuals.	"Dark Frontier, Part II"

The goal of the Borg, in most cases, is to completely assimilate each species by incorporating their knowledge and technology into the unified Borg Collective. One by one, each living being is converted into Borg Drones. In many cases, all that remains of an assimilated civilization is the memory of its unique contributions that now resides only within the accumulated knowledge of the Borg. That and the numerical species designation. Often even the name is lost, forgotten or deleted as irrelevant. Conversely, the species designations give a sense of the long and terrible history of the Borg and the thousands of species they have encountered and absorbed.

Designations

Quadrant

Race Name/Description

Source

Image

Delta Quadrant

Tuktak/Ku:

STV #16: Seven of Nine

116

Delta Quadrant

A technologically sophisticated humanoid civilization from the Delta Quadrant. Members of this species were gifted linguists, some knowing several thousand languages. The Borg first tried to assimilate Species 116 many centuries ago, but they were outwitted and eluded until 2374, when the Borg abducted all but about 20,000 individuals. Arturis was a member of Species 116 who had escaped assimilation but later was captured after his plans to lure the U.S.S. Voyager to the Borg failed.

"Hope and Fear"

125

The species the Borg Queen came from. No other information about this race is known.

"Dark Frontier, Part II"

149

Civilization assimilated by the Borg that had advanced medical technology, including a method for reversing cellular necrosis, thus allowing the Borg to reactivate drones as much as 73 hours after "death." This technique was used by Seven of Nine aboard the U.S.S. Voyager to revive Neelix.

"Mortal Coil"

180

Alpha Quadrant

Ferengi: It is not known why the Ferengi, an Alpha Quadrant race, has such a low species number, which would imply that they were encountered and catalogued very early in the Borg's existence.

"Infinite Regress"

218

Delta Quadrant

Talaxian: catalogued by the Borg when a small freighter containing a crew of 39 was taken in the Dolmine Sector. The Talaxians were easily assimilated, and their dense musculature made them excellent drones.

"The Raven"

259

Galactic Cluster 3

Technologically advanced omnicordial lifeform that inhabits Galactic Cluster 3. This species developed the pattern-duplication design that is at the heart of the Borg autonomous regeneration sequencers.

"The Gift"

262

Delta Quadrant

A primitive culture assimilated by the Borg around 2145. Their oral history referred to a powerful substance which could "burn the sky." The Borg were intrigued, and they followed a trail of myth through several cultures until it learned about the Omega molecule.

"The Omega Directive"

263

Delta Quadrant

A primitive culture assimilated by the Borg around 2145. Species 263 believed the Omega molecule was a drop of blood from their creator.

"The Omega Directive"

312

Delta Quadrant

A civilization assimilated by the Borg hundreds of years ago. Species 312 developed tetrion-flux technology that could create an energy barrier undetectable by conventional sensors. Apparently this species had constructed such an energy barrier on the planet Ledos over the southern sub-continent in order to protect the primitive Ventu people from intrusion by the more advanced Ledosians. The energy barrier was impenetrable by the Ledosians until crewmembers from the U.S.S. Voyager found a way to break through it.

"Natural Law"

329

Delta Quadrant

Kazon: The Borg encountered a Kazon colony in the Gand Sector, Grid 6920, but considered the race unworthy of assimilation because their biological and technological distinctiveness was unremarkable. Why assimilate a species that would detract from perfection?

"Mortal Coil"

407

Delta Quadrant

Lennli: Borg designation for a humanoid species with seven fingers on each hand. An artful and cultured society, 407 were assimilated without heavy resistance. Druana belonged to Species 407 before she was assimilated.

STV #16: Seven of Nine

521

Delta Quadrant

Shivolian: A female member of this species visited the U.S.S. Voyager while the ship was docked at the Markonian Outpost in 2376.

"Survival Instinct"

571

A species that worships the supernatural deity Brothara, who frowns upon the desecration of dead bodies. P'Chan, whose Borg designation was 4 of 9, is from this species.

"Survival Instinct"

689

Delta Quadrant

Norcadian: No other information about this race is known.

"Ashes to Ashes"

1811

Delta Quadrant

Borg designation for a Delta Quadrant race. Species 1811 was dismissed as unworthy to join the collective as they would have weakened the whole. They were unable to adapt to assimilation and died quickly as drones.

STV #16: Seven of Nine

2461

Delta Quadrant

Brunali: The Brunali race, of the Delta Quadrant. The Brunali world was located near a Borg transwarp conduit and had been attacked three times in 10 years; each time the Borg wiped out the society they had worked hard to rebuild. This race had developed sophisticated techniques in agricultural genetics to allow them to grow crops in inhospitable environments, and they used the same science to engineer an anti-Borg pathogen that they implanted into the genetic code of some of their children, including Icheb.

"Child's Play"

2822

Delta Quadrant

Borg designation for a Delta Quadrant race. Species 2822 thrived on opportunity, and survive many disasters with ingenuity and skill. Members of this race were added to the Borg collective.

STV #16: Seven of Nine

3105

Delta Quadrant

Rhawn: A humanoid species whose skin, hair and teeth are colored purple. Their planet was destroyed when their two suns collided and the species traveled out into space to find a new home.

3259

Alpha Quadrant

Vulcan: Their enlarged neo-cortex produces superior analytical abilities.

"The Raven"

4228

Delta Quadrant

Hazari: Technologically advanced, extremely violent, the Hazari make excellent tactical drones. Other races often hire them as bounty hunters.

"Think Tank"

4774

Delta Quadrant

Skedan: A race of telepaths with a protective ridge of bone on the skull that protrudes down the back. Non-aggressive. Resistance was minimal. Physically they do not make good drones but their telepathic abilities were added to the technological and biological distinctiveness of the Borg.

STV#16: Seven of Nine

5174

Delta Quadrant

A spacefaring civilization. The Borg once encountered a small ship of this species where the occupants were gutted in a complete osteomy, their entire skeletons surgically removed along with musculature, ligaments, tendons and internal organs. The Borg never determined the perpetrators, considering it irrelevant, but it was apparently the Hirogen.

"Hunters"

5618

Alpha Quadrant

Human: Considered by the Borg to possess below-average cranial capacity, minimal redundant systems and limited regenerative abilities. But several attempts to assimilate this species have failed.

"Dark Frontier, Part II"

5973

Galactic Cluster 8

Multi-spectrum particle life forms.

"The Haunting of Deck Twelve"

6291

Alpha Quadrant

Yridian: The Borg had determined that the Yridians were extinct, as had the Federation, but exo-biologist Rudy Ransom made first contact with the race, thereby proving otherwise. (Ransom was promoted to captain and given command of the Starship Equinox as a result of this accomplishment).

"Equinox, Part I"

6339

Delta Quadrant

Grid 124

Humanoid, warp-capable species that originated in Grid 124, Octant-22-theta. They first encountered the Borg about 2371, and in four years 11 billion of their people were assimilated. In 2375 the Collective intercepted one of their last remaining shuttlecraft and assimilated the 13 aboard. It turns out those 13 individuals were sacrificing themselves, as they were carrying a synthetic pathogen that the race had developed to retaliate against the Borg. That virus was originally a biological agent but mutated and attacked the Borg Cube's Vinculum as it would living cells, and through the Vinculum it was passed on to all drones on the Cube. The pathogen caused thousands of drones to randomly manifest hundreds of thousands of personalities, leading to chaos among the drones and ultimately the destruction of their Cube.

"Infinite Regress"

6961

Alpha Quadrant

Ktarian: A drone originating from this species was studied close up on a Cube by Magnus Hansen.

"Dark Frontier, Part II"

8472

Delta Quadrant

Fluidic Space

Species 8472: Sophisticated lifeform from an extra-dimensional realm of fluidic space. Species 8472 has an extremely dense genetic structure and an extraordinarily powerful immune system; almost anything that penetrates their cells is instantly destroyed, including chemical, biological, or technological intruders. In late 2373 the Borg discovered fluidic space and learned that Species 8472 possess organic spacecraft and a biogenically engineered weapons technology that was superior to anything known to the Borg. Seeking to assimilate this civilization and its technology, the Borg launched an attack on the fluidic space realm, only to be repulsed by Species 8472. Shortly thereafter, 8472 launched a retaliatory strike, sending hundreds of powerful bioships into the Delta Quadrant with the goal of eliminating all lifeforms from the galaxy, destroying entire planets and fleets in Borg-occupied space. The 8472 assault was halted when the U.S.S. Voyager collaborated with the Borg to use new nanoprobe technology the crew had developed, a weapon against which the species had no effective defense. It was in the midst of the 8472 battle that Seven of Nine came aboard Voyager and was later severed from the Hive.

"Scorpion, Part I"

9341

Beta Quadrant

Nonhumanoid; unassimilatable; spaceborne; large mothers infest entire sectors with young

Star Trek: Armada II

10026

Delta Quadrant

Humanoid, A species from Grid 532 whosweapons could penetrate Borg shields. A population of 392,000 that was assimilated in mid-2375. The Borg Queen tried to force Seven of Nine to help assimilate this race, but instead she arranged the escape of four individuals.

"Dark Frontier, Part II"