Freshwater fish

Nicholas Robinson et al, Nofima, Norway, genotype full-sibling families using an Illumina iSelect array containing SNPs found in transcribed genes, in order to produce a genetic linkage map of the L. rohita genome and simultaneously scan the genome of challeng…

This research report contains a brief look at the current status of catfish feeds and is primarily intended for catfish producers and feed formulators and manufacturers, write Edwin H. Robinson and Menghe H. Li, Delta Research and Extension Center in Stonevill…

Research by A. M. Abdelhamid and Ahmed Ismail Mehrim, Al-Mansoura University and I.A.Radwan and A.F.Abdelhamid, Al-Hamoul Fish Hatchery looks at the possibility of reducing cannibalism among newly hatched catfish (Clarias gariepinus) fry by grading.

During the last three decades, a great attention was paid towards aquaculture as an attempt to fulfill the gap between the increased population and their demands from animal protein, write A.M. Abdelhamid,Al-Mansoura University, Mohamed H. Ahmed and Doaa Kh. K…

Any fish farmer that wants to record a high survival of fishand better growth in record time in their ponds must endeavour to paygood attention to pond water quality, writes Lanre Ogunsina.

Two genetically improved tilapia strains (GIFT and Akosombo) have been created with Oreochromis niloticus (Nile tilapia), which is native to Africa. In particular, GIFT has been shown to be significantly superior to local African tilapia strains in terms of gr…

Many farmers have been unable to successfully breed African Catfish. Several attempts made have given unfruitful results. In this guide, Lanre Ogunsina lists his own simple 19 proven steps to efficiently breed the African Catfish.

This study by Ahmed Mohamed Nasr-Allah et al was carried out in order to understand the technical and economic characteristics of different Egyptian Nile tilapia (Oreochromis niloticus) hatchery systems. Hatchery operators at fifty tilapia hatcheries in four g…

This study by Ahmed Mohamed Nasr-Allah et al, WorldFish, Egypt, was carried out in order to understand the technical and economic characteristics of different Egyptian Nile tilapia (Oreochromis niloticus) hatchery systems.

This study by A. M. Abdelhamid et al, Al-Mansourah University, Egypt, aimed to investigate the effect of dietary graded levels of three pre-and probiotics on the immunity and haematology of all-males mono-sex Nile tilapia fish.

Fish depend on dietary fatty acids (FA) to support their physiological condition and health. Exploring the FA distribution in common carp (Cyprinus carpio), one of the world's most consumed freshwater fish, is important to understand how and where FA of differ…

A series of experiments showed that fishmeal is not an essential ingredient in tilapia feeds and that plant protein-based diets can yield results similar to those obtained with diets containing 10 per cent fishmeal, write Nathan Gur and Guy Rubinstein, Israel …

Anecdotal reports have indicated polyculture and biofloc systems can reduce outbreaks of diseases at shrimp farms. A laboratory study at the University of Arizona examined the effects of tilapia in controlling acute hepatopancreatic necrosis (AHPN) infection a…

The objective of the present study was to determine the effects of dietary inclusion of different levels of pawpaw seeds powder (PSP) at different periods on the growth performance, survival rate, feed utilization and carcass composition of fry and fingerlings…

Kassaye Balkew Workagegn, Hawassa University, Ethiopia, conducted this study to investigate the growth performance, feed utilization efficiency and survival rate of juvenile Oreochromis niloticus reared in aquaria at different water temperature.

In part three of three, A.M. Abdelhamid, Mansoura University, Egypt, aims to investigate the effect of dietary graded levels of Aqua Superzyme, Garlen Allicin, and Diamond V (Original XPC) on the chemical composition and histology of all-males mono-sex Nile ti…

In part two of three, A.M. Abdelhamid, Mansoura University, Egypt, aims to investigate the effect of dietary graded levels of Aqua Superzyme, Garlen Allicin, and Diamond V (Original XPC) on feed utilization by Nile tilapia fish for 16 weeks.

In part one of three, A.M. Abdelhamid, Mansoura University, Egypt, aims to investigate the effect of dietary graded levels of Aqua Superzyme, Garlen Allicin, and Diamond V (Original XPC) on the growth performance and economic production of Nile tilapia fish (1…

Tilapia production is increasing around the world. Here Moises Diaz Barboza et al, National University of Trujillo, Peru, investigated the results of mechanising the farming of tilapia in ponds in Palo Blanco (Cascas, La Libertad, Peru).

Both male and female gonads undergo marked cyclic morphological and histological changes before reaching full maturity and becoming ripe.

Tilapia is a popular food fish all over the world and in Egypt it has been raised as food for human consumption for a long time. A field study was conducted on brood stock Nile tilapia Oreochromis niloticus to improve their reproductive performance by some com…

In order to help the performance of US catfish farmers, scientists at the USDA Agricultural Research Service are examining breeding, nutrition, genetics, and management practices to produce better hybrid catfish.

Tra catfish (Pangasius hypophthalmus) is a dominant cultured species in Vietnam in terms of production. Its aquaculture production in 2011 was approximate 1.2 million metric tons. The main culture system for tra catfish is intensive model in earthen ponds with…