Freshwater fish

AMM. Yones and AA. Metwalli from the National Institute of Oceanography and Fisheries, Shakshouk Fish Research Station, El-Fayoum, Egypt, look at the effects of fish meal substitution with poultry by-product meal on the growth performance, nutrients utilizatio…

Malawi's fish production is dwindling and the development is not in tandem with the human population increase. In view of this, it is imperative to increase fish production to tally with the high market demand, write Mzengereza K, and Kangombe J, Department of…

The true cost of each disease outbreak is complicated by an intricate interplay of environmental and management-based factors, from the direct losses in stock, through to indirect losses in the downstream industry, writes Andy Shinn, Jarunan Pratoomyot, Pikul …

This guide explains how integrated aquaculture farming (where a farmer can rear fish, chicken and plant vegetables) on a plot of 10 by 10 feet can generate food and an income for a family in the Philippines.

A major European-wide research project is making strong inroads into developing new breeding programmes to improve the stock of six important aquaculture species, writes Chris Harris.

Often dubbed the aquatic chicken, farmed tilapia is now a staple in many parts of the world. A healthy source of protein, micronutrients and essential fatty acids, tilapia is now the fourth most consumed fish in the US and it is farmed extensively in China, Eg…

The main objective of this study by Hooi Ling Khaw et al, Wageningen University, Netherlands, is to quantify the genetic and non-genetic indirect effects for harvest weight in the GIFT strain of Nile tilapia.

Sub-Saharan Africa presents a solid marketing opportunity for tilapia producers, processers and traders, particularly in view of the dwindling nature of traditional sources of fish, population growth, and rising incomes. However, it is important to first under…

This article by Dr Abdel Raheam H. A. El-Bassir and colleagues from Sudan explores the effects of preserving fish using salt on its nutritional properties.

Achieving better growth rates or improved efficiency relies on good gut performance in aquaculture species, write Rui Gonalves, Gonalo Santos..

IRTA researcher Enric Gisbert explains what the Feed Conversion Ratio is, how to calculate it and its importance for fish production.

A new aquaponics farming company, VertiCulture Farms, is being developed in Brooklyn, New York. With public help, enough money has now been raised to fund an idea for a research and development farm on the roof of the old Pfizer building. Once they prove their…

Increased aquaculture production will be needed in future to improve food security, but what role can genetically improved farmed fish species play in increasing productivity? This study from Ingrid Olesen and colleagues investigates.

Maintaining good water quality and strict biosecurity measures can help pangasius farms remain productive and profitable.

Though pangasius can thrive in a variety of culture conditions, its nutrition is critical to successful farming.

Maintaining fish health and preventing disease are critical when farming pangasius.

In Part One of this four-part series, The Fish Site explores the ins and outs of pangasius farming.

The native range of Silver Carp Hypophthalmichthys molitrix and Bighead Carp H. nobilis, collectively referred to as bigheaded carp or Asian carp, includes wide ranges of the Asian continent. However, following inadvertent introduction in the southeastern Unit…

With increasing an increasing demand for pork, pig farming in Cambodia is developing. Reporting for 5m Publishing, Stuart Lumb gives a run down of a farm near Phnom Phen in Cambodia which is farming both pigs and fish.

Producing cost-effective sources of feed is a major challenge in the tilapia aquaculture industry, so a scientific study by researchers from the United Arab Emirates University as well as Benha University and Alexandria University in Egypt looked at whether da…

Juvenile production of Nile tilapia comprises a stage with high economic losses due to disease outbreaks, as stressful conditions caused by increased fish handling at this stage favouring opportunistic infections by several pathogens, write Santiago Benites de…

Good water quality on tilapia farms depends on a suitable environment to promote growth. Such an environment can be achieved by maintaining the correct balance between feed input and the assimilative capacity of the water. However, the more fish that are grown…

Water quality is very important in fish farming as poor quality water can effect the health and growth of the fish. It is important that farmers pay attention to the water's chemical and physical factors.

The stocking rate of channel catfish in aquaculture can affect production, but what effect does it have on the development of off-flavours in fish flesh? This study by Bartholomew Green and Kevin Schrader from the US Department of Agriculture aimed to answer t…

The dynamics of common carp influences on the environment and ecology in polyculture ponds are unclear, so this study by Mohammad Rahman looked at the effects of various stocking densities of common carp on the dynamics of nutrients, phytoplankton, zooplankton…

Including small amounts of garlic in the diet of Nile tilapia led to an increase in growth rates, suggests a study from A.I. Mehrim and colleagues from Mansoura University in Egypt.

Tilapia has drawn much attention lately and been recognized by FAO as the most potent culture fish species in supplying human protein source of the Century.

The level of success we get in catfish farming is usually tied to the level of management practices we decide to put in place in conjuction with the level of efficiency we achieve from our culture systems, writes Lanre Ogunsina, Fish Unlimited. Part 2 and 3 co…