fish042099
New member
Not in a 100. You need to consider their adult size and remember they are bottom dwellers for the most part. If you have an eel that is 3' long full grown it will most likely use 1.5-2x its length (4.5-6 sq feet) of floor space (not cubic feet) as its home. For instance, a 75gal (I don't know dimensions of 100gal) 48"x18" you have 6 sq. feet of floor space. And this theory of mine is truthfully on the small side of a proper home for my single Fimbriated moray. I would assume you could house all three of the eels you mentioned as babies or sm. juvies. but it is almost cruel to keep all three as adults in a tank that small. Think of it as you having to live in your bathroom your entire life? Try to pick just one med size eel or a sm group of GDM's?
I was using Scott W. Michael's reef fishes book for tank sizes, it says a Fimbriated moray can live in a 55 but your way of determining tank size seems much more reasonable and animal friendly.