11-04-2012, 06:27 PM
| || |
A Betta really should not be in a community tank. This is one fish that is much better on its own. For one thing, Betta will easily eat neons [mine did], but eventually the neons are likely to find it playful nipping the Betta, causing stress. Either way, not good.
What species is the "red" tetra? And "Harlequin" presumably refers to the Harlequin Rasbora, not a true tetra, though somewhat similar in behaviour and needs. All of these fish should be in a groujp of at least six of their own species. With less, nipping among the tetras is quite possible.
As for the corys, they do not have teeth except in the larval and juvenile stages when they have small premaxillary teeth that they subsequently lose. I have never heard of a cory biting anything, they are probably the most peaceful of all fishes.