coldwater fish compatability and tank density
#1
I am new to Coldwater fishkeeping, having previously successfully kept numerous tropical tanks.
I would much appreciate some advice from anyone.
1. How many fish (or inches of fish) can be safely kept in a 24" x 12" aquarium with undergravel filtration.
2. Are there any compatability issues of types of fish I can keep.
I currently have 2x Fantails about 2.5"(overall), they are the first inhabitants of the tank. Would I be able to safely add a couple of Black Moors? Any views appreciated!