20 Best Coldwater Aquarium Fish. Do further research before adding them to your tank so you can be sure they are compatible with other fish you intend to stock. Whilst this isnt strictly necessary for a cold water aquarium the.
However swordtails tight in a 20 gallon variatus and platys like water around 18c and up. The koi carp fish are coldwater fish that are perfect for garden ponds. The beautiful Betta fish makes an excellent option for nano tanks and these are some of the easiest fish to care for and an ideal pick for beginners.
The oscar is a common choice for people looking for a large predatory fish.
Good choices for companion include small tetras rasboras corys and other small catfish. The beautiful Betta fish makes an excellent option for nano tanks and these are some of the easiest fish to care for and an ideal pick for beginners. While male Bettas are known for being aggressive and fighting with each other they do well as a solitary fish or when kept with a few similar-sized small-finned fish. Some of them are quite popular and others are under the radar.
