Large fish for 29 gallon fish tank?
Considering your tank is only 29 gallons, and most fish need a male/female companion, you don’t have much options with larger fish. The general rule of thumb is 1 inch of adult fish per gallon of tank. Clown Loaches are suitable for freshwater aquariums 20 gallons and up. They can get quite large but they grow very slow, so they can be put in a small aquarium as long as they are eventually upgraded to a larger tank. Tiger Barbs are a hardy fish that will occupy all areas of a tank, top, middle and bottom. Minimum 3 per tank and they can be kept with other peaceful fish. If your aquarium is small, 20 gallons and under, you might not want to include barbs because of their territorial nature unless you include other semi-aggressive fish then every fish school will establish their own territories. Do not keep Tiger Barbs with slow moving, long finned tropical fish because they are fin-nippers and can be aggressive towards slow moving fish. They will be fine in that tank if you take good care of them. Tiger barbs are very hardy fish and a good addition to the semi-aggressive and fast-moving tropical fish aquarium. Getting three 8 inch adult sized fish in a 29 gallon, will be under the limit, but you’d need at least a 90 gallon to make them comfortable. Tiger Barbs are schooling tropical fish that are quite active and an enjoyment to watch. The Clown Loach ia a great community fish addition for any tropical aquarium. Any livebreaders, rainbow fish, danios, tetra (some actually get 3 inches), or barbs. They are the smartest fish I know of and I have kept multiple aquariums for over 35 years. HI – I wouldn’t go any larger than a 3 in adult fish. Your fish also need to be compatible too, so they don’t stress each other out. I actually prefer Rainbow fish myself. An oscar will pick his teeth with an angel fish.