In this issue:

Habitat breeding and seed rearing of a near threatened featherback, Chitala chitala; Wild seed collection and modified-extensive farming of Mystus gulio in inland water bodies of South 24 Parganas, West Bengal; Freshwater pearl culture practices and challenges in India; Next generation probiotics: Future therapeutics for sustainable aquaculture; NACA Newsletter.

The cultivable small- to medium-sized bagrid catfish Mystus gulio is an estuarine species sold as a high-priced food fish in retail markets in cities and towns of southern West Bengal. M. gulio is a good addition to mixed species culture-based fisheries in canals in the Indian Sundarbans region. It adapts and grows well in freshwater ponds and is recommended for freshwater fish culture in areas of the Sundarbans vulnerable to saline water intrusion. This article describes the seed collection, nursery and grow-out practices of M. gulio as practiced in modified-extensive mixed culture systems in West Bengal, India.

The humped featherback, Chitala chitala is considered to be one of the most commercially important food, sport, aquarium and highly priced cultivable fish in Assam. However, over exploitation, habitat degradation and pollution has caused wild populations to decline in recent decades, to the point where the species is categorised as Near Threatened on the IUCN Red List. Here we present the biological aspects of breeding and larval rearing protocols of the humped featherback, which has been prioritised as a new candidate species for freshwater aquaculture in India. The information will also aid in stock enhancement and conservation of this species.

In this issue:

Global Conference on Aquaculture Millennium +20;  Workshop on SDG-aligned Artemia aquaculture;  Professor Sena De Silva Memorial Oration, 8 October 2021; Apply now: Training Course on Mariculture Technology in Asia-Pacific; New project on “Blue transformation in aquaculture”; Webinar on Status of Artemia cyst use in fish and crustacean hatcheries.

In this issue:

Opinion: Benefits of animal welfare in Indian aquaculture; Imparting skill on formulated fish feed preparation to women’s self-help groups in villages – an experience; Farming of the anadromous shad, Tenualosa ilisha: Signs of taking off in India; Some facts on cannibalism in Wallago attu and its management during captive seed production; NACA Newsletter.

Wallago attu is a large catfish reaching 45 kg found in the Indian subcontinent, Thailand, Vietnam, Cambodia and Indonesia. Early attempts at captive production encountered high losses due to cannibalism during early life stages. This article discusses the causative factors governing cannibalism in this catfish, including rapid transfer from live to commercial feed, size differences during stocking, seasonal changes, feeding at long intervals, high density rearing, feed distribution, feeding method and size of feed, and management strategies for minimising losses during the seed rearing period.

Join us online at the SDG-aligned Artemia Aquaculture Workshop, which will be held on 22 September, via Zoom. With the expansion of hatchery production, the demand for Artemia cysts has continued to increase and annual consumption is now estimated at 3,500 – 4,000 tonnes, underpinning the production of over 10 million tonnes of high-value aquaculture species. Approximately 90 percent of the current Artemia production is harvested from inland salt lakes. The purpose of the Artemia workshop is to explore needs and opportunities for a new international initiative to guarantee a more sustainable provision of Artemia, both from natural sources and from controlled extractive Artemia farming integrated with salt production and other fish/crustacean aquaculture. View programme | register

Videos from our recent webinar Status of the use of Artemia cysts in fish and crustacean hatcheries around the world are now available on NACA's Youtube channel. Please consider subscribing for more technical aquaculture content!

Join us on 2 September at 12 noon GMT for a free webinar on the Status of the use of Artemia cysts in fish and crustacean hatcheries around the world. The webinar is facilitated by the International Artemia Aquaculture Consortium (under formation). The webinar will document differences in practices used by fish and crustacean hatcheries in the use of Artemia cysts for the preparation of live feeds. Speakers include technical experts using Artemia in the production of shrimp, freshwater prawn, mud and mitten crabs, seabass, sabream and other marine fish from Bangladesh, Brazil, China, Ecuador, Greece, India, Spain, and Thailand. Participation is free but registration is required.

In this issue:

Integrated taxonomy, conservation and sustainable development: Multiple facets of biodiversity; A note on 100th birth anniversary of the late Dr Hiralal Chaudhuri; Aquaculture field schools supporting mangroves for climate change adaptation of Indonesian milkfish-shrimp farmers; An insight to red tilapia breeding and culture: A farmer advisory; Aquaculture for livelihoods and food security in North-western India; NACA Newsletter.