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What do young osteoglossomorph fishes eat?

Created from Britannica articles using AI. AI can make mistakes, so verify using Britannica articles.
A large pirarucu fish (Arapaima gigas) with dark scales and reddish tail swims in an aquarium, with tree-like structures and aquatic plants in the background.
osteoglossomorph

Young osteoglossomorph fishes, regardless of the specific species, feed on insects and other invertebrates. While most adult osteoglossomorphs are carnivorous—with larger species typically preying on other fish—the young of all species rely on this invertebrate-based diet.1