02-09-2011, 01:19 AM
| || | Byron:
Originally Posted by Byron
It depends upon what the other fish are. There are some general considerations.
"Peaceful" fish tend to live together without incident, provided the tank is large enough and there are sufficient numbers of each species; shoaling fish need to be in groups, like your neons in a group of 8, and as a recent scientific study has proven even neons can become nippy and aggressive when they are in too small a group or in too small a space. Six is usually considered minimum for most species, but the more the better. Your group of 8 is good.
Temptation: putting long-finned and slow, sedate fish in with any tetra needs careful consideration. Again, tank size, and also the aquascaping [providing what the various fish naturally "expect" as in their respective habitats] plays a big part. Any fish that are stressed by their environment can display aggressiveness they otherwise would not do. On this score, I would not attempt gourami or angels (a 30g is too small for a group of angelfish anyway, but even in larger tanks this is asking for trouble).
At the opposite end, fish that may see the tetra as food must be avoided. Even if they do not physically attack the tetra, they send out signals as predators, and this stresses out the tetra leading to health issues and aggression. The angelfish enter this equation too, as neons are natural food for the predatory angels.
I mentioned the aquascaping above, asnother issue is filtration or more accurately the current from the filter. Neons are not fast-water fish, so they should not be combined with other fish that need that as it will stress them out, and vice versa. And of course temperature, neons are cooler water, not above 77-78F, so putting them in with Blue Rams that need 80-82F woudl not work.
In a 30g with 8 neons, you have space for another shoal of tetra of acceptable size and behaviour. And some bottom fish, say any of the Corydoras species, or some of the more unusual catfish that remain under 4-5 inches (BN pleco, whiptail, Farlowella, Zebra pleco...). Maybe some surface fish--hatchets (group of 8-9 of one of the Carnegiella species), pencilfish... . A pair of dwarf cichlids (Apistogramma species), or a male with two females sometimes works better.
Hope this helps.
Yes this helps a great deal, thanks. I always choose to listen to those who have gone before me. Of course the books are good but first hand info from Fish Keepers gains the most respect from me. Again thank you for the nice rundown on species, environment and numbers. I will keep this in mind the next time I get in the FAS-"Fish Acquisition Syndrome". Hope to message with you again sometime.