In Astyanax (Poecilurichthys), we recognize six species-groups defined by the distribution of melanophores on body: 1. bimaculatus; 2. rupununi; 3. abramis: 4. orthodus; 5. asuncionensis; and 6. anterior, which are named for a representative species. brevoortii1 is redescribed using specimens from Trinidad (including types). This species, as member bimaculatus species-group, distinguished lacki...

An experiment on the polyculture of carps with high valued small indigenous fish species (SIS) pabda (Ompok pabda) and gulsha (Mystus cavasius) was carried out in six months culture period to evaluate the production performance of carp with small indigenous fish pabda (Ompok pabda) and gulsha (Mystus cavasius) in the on-farm condition. Three stocking densities of pabda and gulsha were tested, k...

Captive insectivore nutrition is challenging due to the differing nutritional profiles of wild and captive diets an incomplete understanding both. Ultraviolet B (UVB)-irradiation has recently been explored as a means improving prey-insect vitamin D3 Ca content. Although short-term irradiation successful in some species, it unsuccessful black field crickets (Gryllus bimaculatus)—a commonly cultu...