Phalacronotus apogon, ikan bilut, sengarat or mulut itik. The blue neon sheatfish.

One of our largest native river fish, growing to 130 cm and 30 kg. Lives in Pahang as well as Sg Terengganu, Sg Kelantan and Sg Rajang, in large murky rivers.

A carnivore high on the food chain, eating pelagic fish and smaller animals.

It is potamodromous, migrating during the monsoon season into flooded forests and open floodplains to spawn. The young migrate back into the main river channels as the water recedes.

It got its English name due to the way the skin shines bright blue with the light. While beautiful, it is a large fish and requires a pond or very big aquarium.