Hemirhamphodon pogonognathus

Hemirhamphodon pogonognathus is a slender, elegant halfbeak from the forest streams of Southeast Asia. Its lower jaw is much longer than the upper jaw, and, true to the genus name, this "beak" carries small teeth. The dorsal fin is long-based and starts in front of the anal fin; this feature distinguishes it from the common halfbeak (Dermogenys). Males have a small fleshy appendage at the tip of the lower jaw. It is among the most delicate halfbeaks and is suited to experienced hobbyists.

• 80 liters for a small group; a low tank with a large surface area is suitable.
• 25–27°C, pH 5.5–6.5, very soft water; dried leaves and roots turn the water tea-colored.
• Floating plants, plants reaching the surface and weak flow.
• A tight lid is essential; do small, frequent water changes.

Carnivorous and takes its food from the surface. Fruit flies, mosquito larvae, brine shrimp and small bloodworms are the most suitable foods; it often refuses dry food.

Peaceful toward other species; males display and chase each other. Because it is shy, it should be kept with calm blackwater species.

Good companions: small blackwater rasboras, Boraras, pencilfish, small gouramis such as Trichopsis, small loaches.

Avoid: fast species that snatch food at the surface, fish that need hard and alkaline water, large and inquisitive species.