knight goby

[Phoenixphire55]

Anyone have a knight goby? They are freshwater fish, right? Are they hard to find at pet stores? Would they be compatible with cories and mollies? What about cories, mollies and an angel?

 

[Menagerie]

I used to keep bumble bee gobies, which are brackish; although, they are sold as FW. Do your research on knight gobies. If they are brackish, their life span may be shorten by being in strictly FW.

 

[Phoenixphire55]

I agree, Bumble Bee gobies are brackish water fish, but knight gobies are freshwater fish who can survive in brackish water.

 

[Tony Gill]

According to Dr Helen Larson's 2005 study, there are actually six species in the genus Stigmatogobius: S. borneensis, S. pleurostigma, S. sadanundio, S. sella, S. signifer and S. elegans. Two of these species (S. pleurostigma and S. sadunundio) have been confused in the aquarium literature and referred to as knight gobies. Here's how Helen distinguished the two in her paper

- Single row of ocellate [with pale margin] black spots along midside of body; small dark spot on first dorsal fin placed at base of first two spines; several similar ocellate black spots along bases of bases of soft dorsal and anal fins .............................. S. pleurostigma

- Three or four poorly aligned rows of round black spots along side of body; elongate blackish spot on first dorsal fin from between third to fifth dorsal fin spines; bases of soft dorsal and anal fins with elongate spots and streaks (aligned with fin rays) .................. S. sadunundio

According to the paper, S. pleurostigma occurs in estuarine creeks and mangrove habitats in salinities of 5-25%, whereas S. sadunundio occurs in estuarine streams and mangroves, and "can be found downstream in seawater."

So, both knight gobies are actually brackish, and one would even do okay in a marine tank.

Tony