Spawning Behavior, Egg Development, Larvae and Juvenile Morphology of Hyphessobrycon eques (Pisces: Characidae) Characidae Fishes

Abstract

Hyphessobrycon eques is a famous fish for ornamental fish market and aquarium. They are inhabit in regions of Amazon and Paraguay River basin. Serpae fishs were investigated 2-3 males are chased to female, and then males attempted to simulate the females abdomen. After fertilization, eggs were kept in incubators at 28 o C. The fertilized eggs had adhesive and demesal characteristics and had a mean diameter of 0.92 ± 0.01 mm. Larvae hatched at 16 hrs post fertilization. The hatched larvae averaged 2.90 ± 0.16 mm in total length (L T). Complete yolk sac resorption and mouth opening occurred on the third day post hatching. At 45 days post hatching, the larvae were 12.5 ± 1.60 mm L T and had reached the juvenile stage.

Embryonic and larval development of serpae tetra Hyphessobrycon eques (Steindachner, 1882)

“…In another study (Cole & Haring, ), it was reported that Hyphessobrycon serpae (Characidae) eggs were in the range of 0.74–0.90 mm in diameter. The diameter of the eggs of serpae tetra, investigated in this study, was reported to be around 0.92 ± 0.01 mm and in the range of 0.91–0.93 mm (Park et al, ). The diameter of the eggs of Hyphessobrycon anisitsi , a species close to serpae tetra, was reported to be close to these species (average 0.74 ± 0.07 mm; in the range of 0.63–0.91 mm; Park, Han, & Han, ).…”

“…It also reported that the first horizontal cleavage occurs between the 32 and the 64 cell stages in the Atlantic cod Gadus morhua (Hall, Smith, & Johnston, ) in the Cichlasoma dimerus (Meijide & Guerrero, ); and in the zebrafish Danio (Brachydanio) rerio (Kimmel et al, ) at the sixth cleavage. In a study conducted on developmental morphology of embryonic and larval stages of serpae tetra (Pisces: Characidae; Park et al, ), embryonic development periods of fertilized eggs kept at 28°C water temperature were reported. According to Park et al (), embryonic development stages are defined in one‐hour or half‐hour periods.…”

“…In a study conducted on developmental morphology of embryonic and larval stages of serpae tetra (Pisces: Characidae; Park et al, ), embryonic development periods of fertilized eggs kept at 28°C water temperature were reported. According to Park et al (), embryonic development stages are defined in one‐hour or half‐hour periods. In the present study, the fertilized eggs of serpae tetra were kept at a water temperature of 26 ± 0.5°C.…”

“…It is estimated that there are about 1,400 species within the Characiformes (Mattox & Toledo‐Piza, ; Nelson, ; Reis, Kullander, & Ferraris, ). Serpae tetra is one of the most popular Characidae species for the world ornamental fish market and aquarium trade (Park et al, ; Tavares, ). Serpae tetra is also referred to as ‘jewel’, ‘red minor’, ‘blood’ or ‘callistus’ Tetra (Fujimoto, Almeida, Diniz, Eiras, & Martins, ).…”

“…To this end, this study investigated the embryonic and larval development of serpae tetra and the morphological and histological development of larvae to provide basic information for the seed production of Characidae fish. A study was conducted on the early development of this species (Park et al, ). In this study, it is seen that morphological development stages are defined only by drawings and the histological findings of the larval development period of the species were not observed.…”