Although Neon Tetras have a flashy appearance, they are non-confrontational schooling fish who will spend most of their time in the middle of the tank. I'm wondering if Rainbow fish and Gouramis are compatible?? $30.00. The Otocinclus will be the last fish to get and ONLY I'll get it if i start to get a mega algae attack. I got 3 dwarf rainbow fish yesterday and quickly found out I had 1 male and 2 females,these are great fish and fun to watch eat,they do well in groups of 3 with the company of 3 serpae tetras, 3 pristella tetras, 1 rainbow shark,and a assassin snail, this combination is great for 10 gallon tanks=D There is little consistency. Just watch if the betta is able to eat, though I think that would not be an issue either. I was thinking of a school of lemon tetras and maybe some mollies? They’ve got almost all the bells and whistles of a neon tetra that fishkeepers love and adore, minus a few downsides. Introduced in the early 90s, the dwarf neon rainbowfish is a relatively new species to the hobby. When I ordered four Dwarf Neon Rainbowfish from a local pet store back in early 2011, they all came with mouth rot. I would not put a betta with a rainbow. October 16th, 2015 at 10:26 am. They grow too large to be tankmates with neon tetras and betta's. Description The Dwarf Neon … Other than the M. parva and dwarf neon rainbows, they're all basically the same size as adults too. But I think you would have no problem with that combination. Male and female betta's are compatible with neon tetras, you can fit a school of 10-12 neons in a 30g with a betta. anyone know any good dwarf rainbow fish species that looks good and can go in a little bit of a smaller tank?29-45 gallon tank... i have been looking online for good dwarf rainbows but the only ones i can really find are dwarf neon rainbow fish which im not a huge fan of. I'm considering losing my danios, due to them being weak and suseptable to diseases, and wanted a similar replacement, anybody know if neon dwarf rainbow fish (praecox rainbows) are known for agression or fin nipping, I want something thta my male betta will … I love the dwarf Neon Rainbowfish. Right now it holds 4 platies and 5 guppies. Will look at this asap, cheers Mike. Betta Fish. :unsure: If … Rainbows are pretty active feeders, and deceptively fast. I bought Dwarf Neon Rainbow Fish with Mouth Fungus. Yes. Fish guide for Dwarf Neon Rainbowfish, Melanotaenia praecox, Neon Rainbow fish profile with pictures, habitat, diet and behaviors, fish care for the freshwater rainbowfish aquarium, Peacock Rainbowfish, Diamond Rainbowfish I have to note that I did not pick them out of the fish tank at the pet shop. Different sources will tell you different 'preferred' temperature ranges.