Classification / Names
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Characiformes (Characins) >
Characidae (Characins; tetras) > Cheirodontinae
Etymology: Serrapinnus: Latin, serran, serranus, saw and a fish of genus Serranus + Latin, pinna = spiny, thorn (Ref. 45335); tocantinensis: The name is in reference to the restricted geographic distribution of the species to the rio Tocantins-Araguaia basin. A noun in apposition.
Environment: milieu / climate zone / depth range / distribution range
বাস্তুসংস্থান
; স্বাদু পানি সমুদতলে ভাসমান বেনথোপেলাজিক. Tropical
South America: Rio Tocantins-Araguaia basin in Brazil.
আকৃতি / ওজন / Age
Maturity: Lm ? range ? - ? cm
Max length : 4.0 cm SL পুরুষ/ লিঙ্গ অনিধর্ারিত ; (Ref. 96959)
Short description
সনাক্তকারী নির্দেশক | বহিঃ অঙ্গ সংস্থান | মরফোমেট্রিক্স
পৃষ্ঠীয় কাঁটা (মোট ) : 10 - 11. Serrapinnus tocantinensis is distinguisged from its congeners by the elongation of the unbranched dorsal and pelvic-fin rays into filaments in mature males. It differs further from S. sterbai by the absence of a continuous mid-lateral black stripe extending from the opercular region to the caudal-peduncle spot. It can be separated from other congeners by having the following characters: 9 to 11 cusps in the premaxillary teeth (vs. 5 in S. microdon and S. potiguar, 7 in S. aster, 7 to 9 in S. calliurus, S. heterodon, S. kriegi, S. micropterus, S. notomelas and S. piaba and 10 to 12 in S. gracilis and S. littoris); dentary teeth without expanded cusps forming a sharp cutting edge (vs. dentary teeth with expanded cusps forming a sharp cutting edge in S. heterodon); hyaline dorsal fin (vs. with a proximal black blotch in S. notomela; and black spot absent on the posteroventral region of the abdomen (vs. present in S. kriegi) (Ref. 96959).
Life cycle and mating behavior
পরিপক্কতা | প্রজনন | ডিম ছাড়া | ডিমসমূহ | ডিম্বধারন ক্ষমতা | শুককীট
Malabarba, L.R. and F.C. Jerep, 2014. Review of the species of the genus Serrapinnus Malabarba, 1998 (Teleostei: Characidae: Cheirodontinae) from the rio Tocantins-Araguaia basin, with description of three new species. Zootaxa 3847(1):057-079. (Ref. 96959)
IUCN Red List Status (Ref. 130435: Version 2024-2)
Threat to humans
Harmless
Human uses
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