cardinal tetra

Hi guys, can someone please help me. I have a 95l tank planted tank with 4 cardinals, 5 emperor tetras, 4 rummynose tetras, 6 harlequins, 4 corydoras and a pleco. I do partial water changes 2-3 times a week. Water parameters are 0 ammonia 0 nitrites 10-20 nitrates. 4 of my emperor tetras have...

I have a 125 litre tank and have 10 silver tip tetra, 5 Cardinal tetra, 1 neon tetra and a male Siamese fighter fish.... I want to get more fish I am gonna get a bristle nose Pleco but not sure what else is suitable and appropriate as I did have Serpea tetra and they fin nipped my cardinals and...

Strange cardinal tetra behaviour I am a new aquarium owner. I have a 125 litre fish tank that I have had set up since the beginning of May. I have only had fish in it since Saturday though. On saturday day I went and bought 5 Serpea tetra, 6 Cardinal Tetra and a male Siamese fighter all at the...