Classification / Names
Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa
Teleostei (teleosts) >
Anabantiformes (Gouramies, snakeheads) >
Badidae (Chameleonfishes)
Etymology: Badis: 'badis' is presumably a Bengali local name, possibly derived from 'bhedo' or 'bheda', but it lacks a proper reference. Probably incorrect etymology (J. Müller, pers. comm., April 2021, after information from native speakers); pancharatnaensis: Named for the historical place called 'Pancharatna' in Goalpara district, Assam, India.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Freshwater; benthopelagic; pH range: 8.5 - ?. Temperate; 25°C - ? (Ref. 118053)
Asia: Hasila Beel, a riverine wetland of Brahmaputra drainage in Assam, India.
Size / Weight / Age
Maturity: Lm ? range ? - ? cm
Max length : 4.6 cm SL male/unsexed; (Ref. 118053)
Short description
Identification keys | Morphology | Morphometrics
Dorsal spines (total): 15 - 17; Dorsal soft rays (total): 8 - 9; Vertebrae: 28. Badis pancharatnaensis is distinguished from all its congeners in having a combination of the following characters: dark brownish black bars on sides present; a series of dark blotches along middle of dorsal-fin present; a prominent black blotch on the superficial part of cleithrum present; elongate median caudal blotch with a posterior bar surrounding the caudal-fin base; pointed pelvic-fin reaching beyond vent in both sexes; pointed soft dorsal and anal-fin; 28.2- 33.8% SL body depth; 7.1-9.4% SL interorbital distance; 14-17 scales around caudal peduncle; 31-33 lateral scale rows; 6-8 gill rakers; and 28 (15+13) vertebrae (Ref. 118053).
The type locality is a low lying wetland characterized by dense macrophytic vegetation well connected with the River Brahmaputra and often flooded by the river water, and high degree of rise and fall of water level depending on seasonal climatic variations. Other fish species collected with Badis pancharatnaensis include Amblypharyngodon mola, Anabas testudineus, Channa gachua, Lepidocephalichthys guntea, Mastacembelus armatus, Macrognathus pancalus, Puntius sophore and Trichogaster fasciata which commonly occur in the region. Water quality parameters taken in May 2015 are the following: temperature - 24.8°C, pH- 8.2, DO - 7.8 mgl -1, conductivity - 194 mgl -1and hardness - 81 mgl -1 (Ref. 118053).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Basumatary, S., H. Choudhury, R.A. Baishya, D. Sarma and W. Vishwanath, 2016. Badis pancharatnaensis, a new percoid fish species from Brahmaputra River drainage, Assam, India (Teleostei: Badidae). Vertebrate Zoology 66(2):151-156. (Ref. 118053)
IUCN Red List Status (Ref. 130435: Version 2024-2)
Threat to humans
Harmless
Human uses
Fisheries: of no interest
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01175 (0.00501 - 0.02757), b=2.92 (2.72 - 3.12), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Trophic level (Ref.
69278): 3.2 ±0.4 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
