1.3K views · 54 reactions | When choosing fish for your aquarium, consider the tank's dimensions! Some fish - Discus, for example - prefer long, tall tanks to accomodate the shape of their bodies. Other fish - like most suckermouth catfish - prefer long, wide, and short tanks, which allow for water currents that recreate their natural habitats. The dimensions of the aquarium should be an important factor in the decision of what to keep in it! | Fluval | Facebook