Zenarchopterus buffonis (Buffon's River-garfish)

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A large halfbeak with an extremely elongated lower jaw. A distinctive feature of the species is the black stripe along the lower jaw. There is also a long black band on the flank running from behind the gill covers to the base of the tail.

Fish information (behaviour and breeding):

Not a widely kept species, but known to be a peaceful, schooling fish. Extremely nervous, particularly immediately after import. Likely to jump, so the tank must be covered. Active or aggressive tankmates should be avoided, because they can startle these fish, to the point of causing shock.

Reproductive biology unknown; known to practise internal fertilisation, but whether they are livebearers or egg-layers is unknown.