In recent years, shrimp aquaculture production per unit area has been steadily increasing all across the globe. Greater feed inputs are made possible by increased rates and advanced methods of mechanical aeration, which is essential for intensification. Paddlewheel, vertical turbine, diffuser and venturi aerators are among the mechanical aerators that are largely used in aquaculture. While power for aeration is measured in Kilowatt-hr, most shrimp farmers speak of aeration in terms of horsepower (HP). This is because they are unable to estimate the energy used for aeration from total farm energy use and therefore estimate the same from horsepower (HP) of installed aeration capacity, daily aerator operation hours, and crop duration. ........................ Read this story to know more.. To read full article Subscribe too

The development and expansion of marine finfish aquaculture in India can lead to enhanced seafood production, both for domestic consumption as well as for export. However, the expansion and commercialisation of this activity is restricted, mainly due to the limited or non-availability of seeds of high-value finfishes. Silver pompano, Indian pompano, cobia, seabass, selected grouper varieties, sea breams and snappers are some of the key species that can be targeted as candidate species for commercial level seed production in the country. The prime requirement to achieve this goal is to ensure year-round commercial level availability of hatcheryproduced seeds of such species, for which, controlled reproductive maturation under bio-secure conditions is essential. Unlike some species of shrimps, it is not easy to source the required brooders directly by wild collection. It is time-consuming to collect pre-adult fishes from the wild and condition them into brooders (broodstock development). Hence, a viable option is to establish a broodstock holding facility (Broodbank) where broodfishes can be developed and maintained under bio-secure conditions. Broodbanks facilitated with recirculating aquaculture systems (RAS) can to a large extent, avoid unexpected mortalities of brooders. Induced or volitional breeding techniques can be applied here, and fertilised eggs and newly hatched larvae can be supplied on demand to commercial hatcheries for rearing......................... Read this story to know more...... To read full article Subscribe too

Belonging to the group of Dwarf cichlids and native to South America, Microgeophagus are extremely attractive and colourful fish that are popular among hobbyists across the world. They measure less than 7 cm in length and have long fins and bright colouration. They can be quite easily bred with spawning taking place on a flat rock or large leaf and both parents exhibiting parental care. There are two species of Microgeophagus known in the market; M. altispinosa and M. ramirezi........... Read on to know more...... . To read full article Subscribe too