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I plan on setting up a 40 gal aqua terrarium next summer and asking you out there what would be a good fish type community aquarium.What tetras and other spices get along together including bottom dwellers too.
This link is by no means the "final" say in keeping fish. It's just the authors experience. But it's a good general read with interesting and notable ideas. What works for one aquarist might not work for you, and vice versa https://aquariumscience.org/index.php/17-aquarium-fish-selection/