I currently just obtained 2 awesome tire tracks for my 280 gallon tank and 2 senegal bichirs the eels are roughly over 8 inches long the bichirs are 7 inches long roughly they all make glutts of themselves on earthworms and krill I just wish they would come out more though....the eels that is but when they do its an awesome sight im still looking for a fire eel but Im not sure if all three could live peacefully together