Do these fish nip fins?
Please can you tell me whether Blind cave fish are OK to keep with other fish? I’ve seen them labelled as community fish, but have also been told they often nip fins when they're feeding.
My tank has various other tetras, a pair of Blue dwarf gourami, Panda corys and hatchetfish. Will any of these be bothered by the Blind cave fish?
Blind cave tetra, Astyanax mexicanus, are often sold as 'oddball' community fish and are a popular choice for those seeking something a little different, but that’s still hardy and easy to keep.
As you say though, there’s conflicting advice out there about how suitable they actually are for the average community tank, but my own experience has been that they’re rather boisterous and a bit nippy at feeding times. This seems to be more to do with their method of finding food by smell, rather than actual aggression, and the biting is just a misguided attempt to grab food. After all, if you live in total darkness in a food-poor environment you have to make sure you get your fill when any feeding opportunity presents itself.
As a result, I would say they’d be a poor mix with your current stock, which are largely peaceful, placid fish who may find the Blind cave tetra a bit much, especially given its surprisingly large adult size of up to 10cm.