48 SEPTEMBER • WORLD AQUACULTURE • WWW.WAS.ORG biology of Badis blosyrus and promoting sustainable breeding practices, ensuring that this mesmerizing species continues to thrive both in the wild and in aquariums worldwide. Collection of Wild Badis blosyrus for Captive Breeding To initiate the captive breeding study, wild Badis blosyrus specimens were collected from streams and wetlands in Kamrup district, Assam, near the Guwahati region. These fish were primarily found in slow-flowing water bodies, including weedinfested wetlands, lakes, and rocky-bed streams with abundant vegetation. Collection methods included small cast nets, and bamboo traps, ensuring minimal stress to the fish. A total of 100 live specimens were successfully collected and acclimatized in controlled conditions to prepare them for the breeding study. Maintaining the Broodstock of Badis blosyrus: Creating a Natural Habitat in Captivity After collection, the Badis blosyrus specimens were carefully acclimatized in glass aquaria for two months to help them adjust to captive conditions. To replicate their natural habitat and minimize stress, the tank setup was designed to closely resemble their native environment. The tank floors were layered with sand and pebbles, providing a natural substrate similar to the rocky beds of their wild habitats. To further enhance the environment, aquatic plants were introduced, offering both shelter and a sense of security for the fish. Since Badis blosyrus are cave spawners, special attention was given to providing suitable hiding and breeding spots. PVC pipes were placed in the tanks to serve as hiding spaces, while rocks, coconut shells, and small earthen pots were strategically arranged to create ideal spawning sites. These structures mimicked the crevices and submerged caves found in their natural slow-flowing streams, encouraging natural breeding behaviour. Proper nutrition played a crucial role in maintaining the broodstock in optimal health. The fish were fed ad libitum to promote growth and reproductive readiness. Their diet consisted of a variety of protein-rich live and frozen foods, including worms, The ornamental fish trade is a booming multibilliondollar industry, spanning over 125 countries worldwide. With a retail market value exceeding $8 billion and an estimated total worth of $20 billion, this industry thrives on more than just the sale of fish—it includes essentials like aquariums, aerators, aquatic plants, specialized feeds, and medications. Interestingly, hobbyists drive nearly 99% of the market, while public aquariums and research facilities account for less than 1%. Among the approximately 2,500 fish species traded globally, over 60% are freshwater species, many of which are collected from the wild. India, particularly its northeastern and southern states, is a significant supplier, harbouring a rich diversity of endemic and indigenous ornamental fishes. One such fascinating species is Badis blosyrus, commonly known as the dwarf chameleon fish. This small yet vibrant fish, belonging to the Badidae family under the order Perciformes, is native to Northeast India, particularly in the lower stretches of the Brahmaputra River. It inhabits slow-flowing streams with abundant vegetation and substrate, making it a unique addition to natural aquatic ecosystems. Classified as Least Concern (LC) in the IUCN Red List, its limited distribution suggests that its conservation status may require re-evaluation. Locally known as ‘Dum Bhecheli,’ Badis blosyrus is distinguished by two irregular rows of dark blotches along its body, with striking orange-red hues and bluish-black spots. Its transparent fins take on an orange-red tint at the dorsal, anal, and caudal origins, enhancing its aesthetic appeal. A natural micro-predator, it primarily feeds on live prey such as insect larvae, worms, and small aquatic crustaceans. Beyond its ecological role, the dwarf chameleon fish has gained attention for both its food and ornamental value. In recent years, demand for this species has risen in local markets due to its subtle beauty, calm demeanour, and fascinating swimming behaviour. Currently, it is sold at ₹25-40 (USD $0.29-0.47) per fish, reflecting its growing popularity among aquarium enthusiasts. Recognizing its potential in the ornamental fish market, we initiated efforts to study its natural breeding patterns under captive conditions. This study marks a significant step toward understanding the reproductive First Report on Successful Breeding of Indigenous Dwarf Chameleon Fish Badis blosyrus in Captive Condition Niti Sharma, Suman Kumari, Sona Yengkokpam, B. C. Roy and Basanta Kumar Das FIGURE 1. Badis blosyrus broodstock collected and maintained for acclimatization.
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