I currently have 3 neon tetras and from what i've read that's not enough. I saw some diamond head neon tetras and I was thinking of getting them but they are a bit smaller than my existing tetras, would there be an issue getting them together in a tank? and would they shoal together?
1Does this question Adding neon tetras to an existing school - Any concerns? provide the answers to your question?– James JenkinsJul 8, 2014 at 15:49
Should be worth pointing out that tetras don't school, they shoal. But they should group together, loosely in numbers like those.– JestepJul 8, 2014 at 16:46
@JamesJenkins sort of but the answer to own question about adding different sizes resulted in death. Will the older neon tetras try and attack the smaller ones?– jmluyJul 8, 2014 at 23:41
@Jestep good point, edited the question– jmluyJul 8, 2014 at 23:42
If you have a big tank than you can have both the species because they could fight over space. Do remember that introduce new species in a group of minimum 4 (Personal experience) so that they are not bullied by other fish.