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Scientific Name: Chaca chaca (Hamilton, 1822)
English Name: Squarehead catfish
Local/Bangla Name: Cyaka (চ্যাকা)
Bonyfish : Chaca chaca

Photo: Balaram Mahalder (Fishbase)

Classification:
Kingdom: Animalia
Phylum: Chordata
Class: Teleostei
Order: Siluriformes
Family: Chacidae
Description:
Fin formula: D 5 (1/4); P1. 6 (1/5); P2. 6. It has elongated body with a very wide sub-terminal mouth. Head is dorsoventrally compressed. The upper surface covered with tubercles and with many low and elongated spines. There are 3 pairs of barbels. 2 dorsal fins; 1st dorsal fin contains serrated spine. Two rayed anal fins are present. 2­nd dorsal and 2­nd anal confluent with caudal fin. Caudal fin is rounded. Lateral line present and curved downwards. Body colored blackish or deep brownish.
Habitat & Distribution in Bangladesh:
Inhabits rivers, beels, canals and ponds. Prefers soft substrates where it lies concealed in the soft mire of the river bed.
Environment:
Freshwater (Demersal)
Main References:

Rahman AKA 2005 Freshwater Fishes of Bangladesh, 2nd ed., Zool. Soc. Bangladesh, Dhaka, Bangladesh, xviii + 394 pp.

Other References:

Hossain M, Wahab M, Belton B (2012) The Checklist of the Riverine Fishes of Bangladesh. FAN Bangladesh. 1. 29-39.

Siddiqui KU, Islam MA, Kabir SMH, Ahmad M, Ahmed ATA, Rahman AKA 2005 Freshwater Fishes of Bangladesh, 2nd ed., Zool. Soc. Bangladesh, Dhaka, Bangladesh, xviii + 394 pp. AKA, Haque EU, Ahmed ZU, Begum ZNT, Hassan MA, Khondker M, Rahman AKA 2005 Freshwater Fishes of Bangladesh, 2nd ed., Zool. Soc. Bangladesh, Dhaka, Bangladesh, xviii + 394 pp. MM (eds.) 2007 Encyclopedia of Flora and Fauna of Bangladesh, Vol. 23. Freshwater Fishes. Asiatic Society of Bangladesh, Dhaka 300 pp.

IUCN Bangladesh (2015) Red List of Bangladesh Volume 5: Freshwater Fishes. IUCN, International Union for Conservation of Nature, Bangladesh Country Office, Dhaka, Bangladesh, pp xvi+360

DoF Bangladesh (2023) Album: Freshwater Fishes of Bangladesh, Department of Fisheries, Ministry of Fisheries and Livestock, Bangladesh, Dhaka. 200 pp.

Ahmed MS, Datta SK, Zhilik AA (2020) Molecular diversity of freshwater fishes of Bangladesh assessed by DNA barcoding. Bangladesh Journal of Zoology, 48(1), 1-19.

Giri SS ed, 2017 Monographs on Threatened Freshwater Fishes of South Asia. SAARC Agriculture Centre, Dhaka, Bangladesh, 305 p.

Mahalder B, Mustafa MG (2013) Introduction to fish species diversity: Sunamganj haor region within CBRMP's working area. Community Based Resource Management Project-LGED, Worldfish, Dhaka, Bangladesh, 75.

Froese R, Pauly D (Editors) (2024) FishBase. World Wide Web electronic publication. www.fishbase.org, version (02/2024).

DNA Barcodes from Bangladesh
GenBank Accession Number:
COI: KX455900 MN083143  
Other DNA Barcodes & Nucleutide Sequences
Global IUCN conservation status:
BD IUCN conservation status:
Other Information