Halfbeak - Hemirhamphodon pogonognathus
Scientific name: Hemirhamphodon pogonognathus
Common name: Halfbeak
Usual size in fish tanks: 9 - 10 cm (3.54 - 3.94 inch)
Recommended pH range for the species: 6.2 - 7.8
Recommended water hardness (dGH): 4 - 16°N (71.43 - 285.71ppm)
0°C 32°F30°C 86°F
Recommended temperature: 24 - 27 °C (75.2 - 80.6°F)
The way how these fish reproduce: Pseudo-Livebearer
Where the species comes from: South Asia
Temperament to its own species: peaceful
Temperament toward other fish species: peaceful
Usual place in the tank: Top levels
Food and feeding
Although Halfbeaks will accept quality flake or frozen foods, they prefer live foods and will do much better with them. Insect larvae or similar should be given.
Asia; Halfbeaks are found in Thailand, Malaysia, Singapore and Indonesia.
Males have a modified anal fin to form a gonopodium.
Hemirhamphodon pogonognathus are live bearers but do not produce many fry with each batch. The male will chase the female until she accepts him and then the gestation period can be up to 8 weeks. The fry will have the same length of jaw when they are young, the extended lower jaw doesn’t form until they start to mature. The fry will accept crushed flake or brine shrimp immediately.
The expected life span of Hemirhamphodon pogonognathus is 3-4 years.
A planted tank should be provided with floating plants included. They do not like a strong water current and subdue the lighting. Open swimming places should also be provided. Thanks to Jan Wirén for picture.