ABSTRACT One of the constraints in pirarucu, Arapaima gigas farming is reproduction captivity, due to inconsistent number spawning events per reproductive cycle, thus, unreliable availability juvenile fish. This a first-hand report on predation pirarucu larvae by opportunistic fish species breeding pond. Fish samples were collected for stomach content analysis from pirarucu-breeding pond with r...

The demand for fish consumption continues to rise due its high protein content, leading an inadequate supply of stocks. To address this issue, the utilization public water bodies cultivation is seen as a potential solution. Cultivating in waters can significantly boost production and maximize utilization. One crucial stage freshwater farming hatchery development, aimed at meeting market fish. T...

Transmission is an essential process that contributes to the survival of pathogens. Ranaviruses are known to infect different classes of lower vertebrates including amphibians, fishes and reptiles. Differences in the likelihood of infection among ectothermic vertebrate hosts could explain the successful yearlong persistence of ranaviruses in aquatic environments. The goal of this study was to d...

Mid-trophic pelagic fish are essential components of marine ecosystems because they represent the link between plankton and higher predators. Moreover, they are the basis of the most important fisheries resources; for example, in African waters. In this study, we have sampled pelagic fish larvae in the Eastern Atlantic Ocean along a latitudinal gradient between 37°N and 2°S. We have employed Bo...

Objective: The orange-red spectrum of  the skin of  electric yellow (Labidochromis caeruleus) is  one  of  the  idealistic and  necessary  schemas sought  by  aquarists  and commercial producers. In this study, the effect of live foods meal on the skin coloration of juvenile electric yellow was examined. Methods: 270 fish with an average living body weight was 0.42 ± 0.11 g, and averag...

Teleost fishes typically first encounter the environment as free-swimming embryos or larvae. Larvae are morphologically distinct from adults, and major anatomical structures are unformed. Thus, larvae undergo a series of dramatic morphological changes until they reach adult morphology (but are reproductively immature) and are considered juveniles. Free-swimming embryos and larvae are able to pe...

24 Carbon monoxide (CO) is a gaseous signalling molecule and is produced in vivo from the 25 intracellular breakdown of heme via the heme oxygenase (HO) family of enzymes. In this study 26 we investigated the role of the HO-1/CO system in the control of ventilation in zebrafish, Danio 27 rerio. Immunohistochemistry revealed the presence of HO-1 in the chemoreceptive 28 neuroepithelial cells (NE...