Care
The Wrestling Halfbeak is an elongate surface-dweller known from canals, drains, flooded fields, lakes, ponds, rivers, and streams where the waters are sluggish and heavily vegetated. Larvae and young fry are sometimes found in the brackish waters of the upper reaches of mangrove swamps during the rainy season. The aquarium should be sited in a quiet area and have as large a surface area as possible due to the fact this species can be rather skittish; indeed, it is very important that it is given adequate space so as not to damage the long, delicate mouth parts on the aquarium glass if it suddenly swims at speed. Tall tangles of driftwood and dense planting, including plenty of surface cover from floating species will help to feel these fish feel more secure. Filtration should be efficient, but water movement gentle, and small partial water changes will help to keep nitrate to a minimum. Wrestling Halfbeaks are best kept in groups, comprised of either a single male with several females, or, in more spacious quarters with ample visual barriers, larger mixed groups containing at least 6 males. The latter will help to spread any territorial aggression amongst the group of males. They are peaceful towards other species and tankmates should be of similar size and temperament. Good companions could include other livebearers, hardy Corydoras spp., Kribensis, rainbowfish, clown plecs etc. Avoid keeping with any tiny fish or fry, as these may be eaten, and likewise, do not house with boisterous species which may intimidate the halfbeaks. Ensure that the tank has tight fitting coverslides, as these fish are expert jumpers.
Feeding
Small meaty frozen foods such as daphnia, bloodworm, white mosquito larvae, vitamin-enriched brineshrimp etc. Feeds from the surface. Some specimens may also eventually accept dried foods.
Breeding
This livebearing species has been bred in the home aquarium, although it is considered moderately difficult. Unfortunately once a female has had one or two broods, the subsequent couplings are not always viable, and this is thought to be due to a vitamin deficiency (some sources suggest a lack of vitamins A and D). It would therefore be prudent to offer the fish a high-quality, varied diet, soaking frozen foods in aquarium vitamin supplements prior to feeding. Additionally, some frozen foods are already available enriched with vitamins. Once inseminated, the female gestates for 3-8 weeks, depending on water temperature. Brood size typically numbers 10-30. When the fry are released, it is best to separate them from the adults to reduce the likelihood of predation, and they can be offered baby brineshrimp (Artemia nauplii) and powdered first foods.
