If that's the case then this forum desperately needs to update its FBT care guide, since theirs says 5-6 is ok in 10 gallons. I would also like to point out again I got a 20 gallon long tank, not the typical taller 20 gallon. I figured the extra length would allow me to have another frog or 2. I would say 2 in a 10 gallon would be perfect, but you could accommodate a 3rd if you really wanted to push it, but keep the water changes weekly. 2 parts water 1 part land would be nice for them.