And here I was thinking you finally we're go to get into actually cool fish.....and the topic isn't necessarily "Rays"....I was just using it as an example because it was the 1st thing that popped into my head. Don't be afraid to get creative
So u think Geophagus and Goldfsh would appreciate the extra width rather than length if you HAD to choose one or the other?
I think you made a typoAnd here I was thinking you finally we're go to get into actually cool fish.
A bottom dweller will not always stay on the bottom 100% of the time. If a schooling/shoaling fish is being kept then I'd go for the width, if it's a singular fish that has a stiffer back (puffers vs. silver aro's) then go with the width.
Well... First of all, at size would you consider the ray has outgrown either tank? Are you considering tail length or just disk diameter?
So you'd think the 18" width of the 40 gallon would be better but the 40 gallon is only 36" long. From tip of face to tip of tail the ray will be a large percentage of the tanks total width.
So maybe the 55 gallon. But the 55 gallon is only 12" wide. But similar thing here. Before you know it the total length of the fish will be pretty close to the total width of the tank. Hmmmm.
LMAO Why does everyone else seem to understand the question except you?If the idea here is that the tank is just a grow out tank, then I would probably go with the 55. The extra volume will help keep the water cleaner. Regardless of species. If it's just a grow out tank then it doesn't matter too much.
The 18" width is nice but the 36" length really kills it. A 12" fish is 1/3 the total length of the tank. The 18" doesn't matter at that point. Ideally you want to move the fish before it looks ridiculous in the tank. I think the ridiculousness can be held off a bit longer in a 55 than a 40 gallon.