Red Tail Giant Gourami

The red tail giant gourami is a relative of the well-known giant gourami (Osphronemus goramy), native to northern Borneo. It differs from it by its large gray-brown body and bright red caudal fin. Adults can exceed 50 cm and live for many years. Although it is sold as a small juvenile in stores, it turns into a very large fish within a few years; never release a fish that has outgrown its tank into the wild.

• At least 1000 liters for an adult; a large indoor pond is more suitable.
• 24–27°C, pH 6.5–7.5; very powerful filtration and weekly water changes of 30% or more.
• Sparse, sturdy decor: large roots and rocks; soft plants get eaten.
• A sturdy lid; it thrashes powerfully when startled.

Omnivorous and greedy. Give large-fish granules and pellets, vegetables such as zucchini, cucumber and spinach, and frozen shrimp and mussels. For adults, feeding in moderation once a day is enough.

Calm and curious when young; it can become territorial as it grows. It eats fish, shrimp and snails that fit in its mouth, and uproots plants.

Good companions: robust fish close to its own size: large plecos, large barbs, large and calm South American cichlids.

Avoid: small fish and shrimp, planted setups, slow long-finned species, a second adult male of the same species.