Environment: milieu / climate zone / গভীরতার পরিসীমা / distribution range
বাস্তুসংস্থান
; স্বাদু পানি সমুদতলে ভাসমান বেনথোপেলাজিক. Tropical
South America: Suriname and Marowijne River basins in Suriname; Maroni and Sinnamary River basins in French Guiana; Negro River drainage and at a single locality in Central Amazon basin in Brazil; Trombetas river drainage in Brazil.
Length at first maturity / আকৃতি / ওজন / Age
পরিপক্কতা : Lm ?, range 7 - ? cm
Max length : 11.6 cm SL পুরুষ/ লিঙ্গ অনিধর্ারিত ; (Ref. 79512)
Short description
সনাক্তকারী নির্দেশক | বহিঃ অঙ্গ সংস্থান | মরফোমেট্রিক্স
পৃষ্ঠীয় কাঁটা (মোট ) : 1; পৃষ্ঠীয় নরম পাখনা দন্ড (মোট ) : 5; পায়ূর নরম পাখনা্তুন্ড: 10 - 11; কশেরুকা : 34 - 36. Diagnosed from all other species of Tatia by the following characters: male anal fin with sharp pointed tip; the first unbranched anal-fin ray divided into 3-4 segments; and the last branched ray reduced. Can be distinguished from most of its congeners, except Tatia aulopygia Tatia intermedia and Tatia gyrina, by having a wide mouth, width 54.0-59.7% HL (vs. 39.0-53.3% HL). Additional characteristics for recognition of Tatia brunnea are diagnostic in combination: nasal ossified with wide medial flanges partially sutured to lateral margin of mesethmoid; ribs 9-10; post-Weberian vertebrae 34-36. Other features useful for distinguishing Tatia brunnea include details in coloration, such as: border of mouth whitish, contrasting with dark head; posterior border of nuchal shield usually whitish or pale; pectoral-fin spine usually with transverse bands; caudal fin usually whitish with scattered dark brown blotches; and head width 86.6-93.4% HL (Ref. 79512).
Body shape (shape guide): short and / or deep.
Sympatric with Tatia intermedia in some rivers in Suriname and French Guiana and also in the Trombetas river (Ref. 79512). Rather rare, occurs in the slow parts of creeks. May easily be mistaken as juveniles of Glanidium leopardus with which it is distinguished by means of the pectoral spines (having projections vs. smooth) and by the number of rays in the anal fin (8-9 vs. 12-14). Sexual dimorphism in males appear at a length of 3.5-4.0 cm. Its small size makes it interesting for aquarists (Ref. 35381). Reported sizes at sexual maturity are above 5.46 cm SL and above 7.0 cm SL (Ref. 79512).
Life cycle and mating behavior
পরিপক্কতা | প্রজনন | ডিম ছাড়া | ডিমসমূহ | ডিম্বধারন ক্ষমতা | শুককীট
Sarmento-Soares, L.M. and R.F. Martins-Pinheiro, 2008. A systematic revision of Tatia (Siluriformes: Auchenipteridae: Centromochlinae). Neotrop. Ichthyol. 6(3):495-542. (Ref. 79512)
IUCN Red List Status (Ref. 130435: Version 2025-1)
Threat to humans
Harmless
Human uses
হাতিয়ার
Special reports
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ইন্টারনেট সুত্র
Estimates based on models
Phylogenetic diversity index (সূত্র
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01995 (0.00906 - 0.04395), b=3.01 (2.83 - 3.19), in cm total length, based on all LWR estimates for this body shape (Ref.
93245).
ট্রফিক পর্যায়ে (সূত্র
69278): 3.4 ±0.4 se; based on size and trophs of closest relatives
স্থিতিস্থাপক (সূত্র
120179): উচ্চ, সর্বনিম্ন প্রজন দ্বিগুনের সময় ১৫ মাস (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
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