If you like big Central American cichlids, you\'ll love the Bay snook, Petenia splendida, says Matt Clarke.
Common name: Bay snook
Scientific name: Petenia splendida
Origin: Central America - Mexico, Belize and Guatemala.
Habitat: Found in lakes and the lower and middle reaches of large, slow-moving rivers, usually around soft-bottomed
areas with a sandy or muddy substrate.
Size: Up to 45cm/18\", and a good few kilograms in weight. Expect aquarium specimens to reach at least 30cm/12\", probably larger.
Diet: Petenia feeds on fish and is equipped with an enormously large mouth. Aquarium specimens will take most meaty frozen foods, as well as pellets.
Water: Adaptable to most water conditions, but ideally pH 7.0-7.5, GH more than 15.
Aquarium: You will need an enormous tank as this is a gigantic cichlid when mature. Aim for a system of at least 180 x 45 x 45cm/6\' x 18\" x 18\" and equip the tank with a very powerful filter. Use heavy rocks and bogwood to prevent the fish rearranging the decor too much.
Notes: The genus Petenia is monotypic, so this is the only species available. However, it does exist in at least two colour forms including a pinky-gold version. The fish shown here has doubled in size and started to turn a sort of peachy colour.
Availability: This fish isn\'t particularly rare, but is still far from common in the hobby. Specialist dealers should be able to obtain this species relatively easily.
Price: About 10 for a 2.5cm/1\" fish.
This article was first published in the January 2004 issue of Practical Fishkeeping magazine.