In this issue:

• Progressive women carp farmers of Haldia, Purba Medinipur, West Bengal, India.
• Captive breeding of Ompok bimaculatus (pabda): An indigenous catfish of North East India.
• Reaching out to the unreached through diversified aquaculture in Nagaland.
• Fish cooperatives: Development and performance through sustainable development goals for food and feed ecosystems.
• NACA Newsletter.

Ompok bimaculatus, locally known as pabda catfish, is widely distributed in the natural water resources of Assam and other northeastern states of India. It is a preferred indigenous non-airbreathing catfish with high market demand compared to Indian major carps and exotic carps. Due to habitat modification and over exploitation, pabda has been assessed as Near Threatened by the International Union for Conservation of Nature. This article describes the development of captive breeding protocols for pabda at the Pabhoi Fish Farm, including broodstock management, captive breeding, and larval rearing. Fecundity ranged from 20,000-22,000 eggs per 100 g body weight. Spawning was induced with Ovatide and eggs transferred to a flow-through system for hatching. Larvae began exogenous feeding after two days.

In this issue:

• Scientific aquaculture to promote better livelihoods for Scheduled Caste farmers.
• Rainbow trout in Jammu and Kashmir: Present status and strategies for expansion.
• Community participation in marine ornamental aquaculture: An integral approach on livelihood empowerment of islander women and conservation of reef ecosystems at the Lakshadweep Islands, India.
• Training programmes organised by West Bengal Fisheries Department in South 24 Parganas in the beginning of 2024.
• Exploring the possibility of captive production of a near threatened catfish, Rita chrysea for Indian aquaculture.
• NACA Newsletter.

Rita chrysea, a member of the Bagridae family, is a medium-sized freshwater catfish predominantly inhabiting the Mahanadi River system, coursing through the states of Chhattisgarh and Odisha in India. It has been classified as Near Threatened by the IUCN. Researchers at ICAR-CIFA, Bhubaneswar, have achieved successful breeding and rearing of R. chrysea in an intiative that aims to to popularise the species through training programs for farmers. This article describes methodologies to induce spawning and rear the larvae of R. chrysea and its performance in captivity, potentially paving the way for its adoption as a mainstream aquaculture species. Furthermore, the insights provided in this article may contribute to ensuring the captive breeding and rearing of two other species, R. pavimentata and R. rita, in the future. These species, belonging to the same genus, dominate Indian river systems.

Promoting and encouraging community participation in marine ornamental aquaculture presents an alternative approach to enhancing the economic status of marginalised individuals, particularly women, in the Lakshadweep islands. Additionally, it aids in curbing the wild capture of marine ornamental organisms, thereby relieving pressure on natural resources. The article examines the strategy of community-based marine ornamental aquaculture and its significance in bolstering the economy of islanders, particularly women, in the Lakshadweep Sea. It seeks to investigate effective approaches to promote the sustainability of the coral reef ecosystem in the region. High-value marine ornamental organisms, such as fishes and shrimps, are cultivated in community aquaculture units using simplified technology. These organisms are supplied to aquarists and hobbyists, thus supplementing the income of local women islanders.

This manual covers everything from grass carp's natural distribution and reproductive behaviours to its biology and anatomy. This manual also explores diseases that can affect grass carp and emphasises the crucial connection between animal welfare and stress in fish. With a detailed discussion on cultivation systems, this manual includes pond structures and fish farming techniques in both polyculture and monoculture. It provides practical insights into important aspects such as water quality monitoring, feeding, nutrition, health checks and behaviour assessments at every stage of grass carp farming – from broodstock management to pre-slaughter and slaughter processes. The emphasis is on responsible harvesting techniques, transportation considerations and humane slaughter methods. This manual offers a comprehensive guide for both novice and experienced fish farmers, and enthusiasts interested in cultivating grass carp sustainably and ensuring optimal animal welfare.

This FAO publication on brine shrimp is a manual for all those who are using Artemia or have an interest in this organism, whether as a source of live food in the hatchery, as a model organism in research, or for other purpose. It is intended for those who wish to update their knowledge on its biology, production or its use, but also for those who want to learn about Artemia for the first time. This manual presents in a concise form essential information on Artemia biology and the most important natural cyst resources that find their way to the aquaculture market. It also provides detailed information on general principles and practical procedures to produce Artemia in ponds and in tank systems. Finally, the manual offers a compilation of state-of-the-art guidelines and methodologies related to the use of this crucial live food organism in aquaculture.

In this issue:

• Neolissochilus hexagonolepis (chocolate mahseer): A flagship species for diversification of hill aquaculture in Northeast India.
• Aquarium fish culture in open village ponds in South 24 Parganas, West Bengal.
• Women nurtured transformative aquaculture in rural Bengal.
• Breeding and seed production technology of striped spiny eel Macrognathus pancalus to benefit fish farmers.
• Grow-out culture of the loach Lepidocephalichthys thermalis in modified tanks.
• NACA Newsletter.

This article investigates the ecological, economic, and cultural importance of Neolissochilus hexagonolepis, commonly known as chocolate mahseer and its potential for hill aquaculture in Northeast India. The taxonomy, distribution, and distinct features are described. Chocolate mahseer populations are in decline due to habitat degradation, overfishing and environmental changes, and it is designated as "near threatened" by the IUCN. Breeding patterns, growth parameters, and culture techniques are explored in depth as a candidate species for aquaculture development. Conservation initiatives and the need to balance economic utilisation with species conservation in chocolate mahseer farming are discussed.

The article highlights the successful commercial-scale breeding, propagation, rearing, and sale of aquarium fish species in the Howrah and South 24 Parganas districts of West Bengal, India. It focuses on the innovative practices of two experienced aquarium fish farmers, Sri Bikash Sau and Sri Swapan Parua, who have introduced a novel approach to aquarium fish culture in open earthen and common village ponds. The success stories of Sri Bikash Sau and Sri Swapan Parua serve as inspirations for small and medium-scale farmers and aqua-entrepreneurs. Their innovative approach to open pond production for aquarium fishes demonstrates the increasing potential and expansion of the aquarium fish business in the region.