I’ve been curious about the different kinds of really peaceful fish species there are, and I thought it would be fun to hear what everyone’s experiences have been.
Lambchop Rasboras, Trigonostigma espei: I kept a group of 10 of these guys in my 75 gallon. They were actually mislabeled as Harlequin Rasboras, it took me awhile to find out they were not the same thing. They are very tight schooling fish. I lost some to disease, and when I replaced them with Harlequin Rasboras I thought I’d gotten bullies or something because I saw them doing things like darting at other fish, which I’d never seen my Lambchops do. These guys always swim tightly together, they never so much as dart or display at each other. They are the epitome of peacefulness to me.
Gold Tetra, Hemigrammus rodwayi: I’ve had a school of 10 of these. Like the Lambchops, they never dart or bother anyone. But the reason they seem really peaceful to me is their behavior, not towards themselves, but towards other fish species. They have a tendency (at least mine do) to try and school with other mid-dwelling fish, and will happily swim about with them. At one time mine formed a school with themselves, the Espei Rasboras, and Dwarf Neon Rainbowfish, this school lasted over a year and consisted of just over 2 dozen fish. Eventually though, the new Harlequins I got would chase and the Gold tetras wouldn’t school with them anymore, and a new male Rainbow would corral the females away from the Gold Tetras, apparently more interested in a single-species school. The Gold Tetras will still swim in 1 big school with everyone after water changes though.
Corydoras Catfish – I have a group of around 14 Panda Cories. They are always bumbling around together, and they often look like they are actually playing. Never seen any aggression from them either, towards other fish or their own species. Adults will share a sinking wafer with fry the size of their caudal fin, it’s so cute.
So how about yours?