Does any onw know would the Melanotaenia Praycox Rainbow be better off in a 20 gallon long or tall. I am trying to breed them and have 3 Males and two Females. Right now they are in a 20 gallon high but I could move them to a long. Thanks
A 20L would be preferred as they really enjoy swimming the length of the tank. I moved mine from a 24" long tank to a 48" long tank and they are so happy.