Difference between a goby and a Blenny?

[QueenAngel]

I'm not sure what the difference between a goby and a blenny is, anyone know?

[Razoreqx]

I'm not sure what the difference between a goby and a blenny is, anyone know?


Blennies reach a size of three inches and are typically bottom dwellers. They are somewhat territorial in nature, and only one species per tank is recommended. Extensive rockwork and a good growth of microalgae are necessary to successfully maintain them in captivity.



Gobies are relatively small fish, usually reaching three inches in captivity. Gobies adjust well to aquarium life. A well-sealed lid is a requirement for keeping gobies, as they will jump out of an open aquarium. Plenty of rockwork and the proper substrate of coral sand should be provided to enable burrowing or sand sifting Gobies the proper environment.

[ZenKitty]

Blennies (Blenniidae) and gobies (Gobiidae) are small, usually elongate bottom-living fishes that are quite abundant in tide pools or rocky shores throughout all warm seas. Some forms are capable of leaving the water for short periods of time, or “skipping” over the rocks from one pool to another with a great show of speed.

Superficially these two families of fish look quite similar, but they may be distinguished by the fact that the paired pelvic fins (located beneath the head in these fishes) are directed outward to the sides in the blennies and consist of but two or three rays each, while in the gobies the fins are united into a central fan-like structure which is believed to assist them in clinging to the rocks which they live.

[QueenAngel]

Thank you!

[boxercrab]

blennies have on long dorsal fin but gobies have two or more fins on their backs. :wink: