taking him back was probably best but OTOH If you have a long term plan that’s cool, but the growing curve slows in smaller tanks.Why do u automatically suspect that…don’t assume…he’s been back at the lfs for a bit now so no worries. Thanks for the input.
And I’m not scolding, almost all aquarium fish potentially get bigger in the wild than in aquariums. Just know in practice you can keep the fish in almost any sized tank “theoretically” but how healthy a stunted fish is and to what degree is outside of my knowledge.
Also not sure who has bred large batches of fish but anything that reaches 10” grows faster than practical for that tank…again that’s assuming you don’t mind drastically stunting that fish..again, if that even matters…