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Characiformes (Characins) >
Characidae (Characins; tetras) > Stethaprioninae
Etymology: Astyanax: The name of Astyanax, Hector´s son in the Greek mythology (Ref. 45335); bacalarensis: Named for its type locality, Lake Bacalar in Quintana Roo, Mexico. An adjective.
Eponymy: Astyanax was the son of Hector in Greek mythology. See Homer’s Iliad for details. The reasoning for its use for a genus of characins is not explained. (Ref. 128868), visit book page.
Environment: milieu / climate zone / depth range / distribution range
বাস্তুসংস্থান
; স্বাদু পানি সমুদতলে ভাসমান বেনথোপেলাজিক. Tropical
Central America: Quintana Roo, Caribbean versant of Yucatan Peninsula in Mexico, south to the Sittie River, Toledo district in Belize, west to Mopán in Guatemala.
আকৃতি / ওজন / Age
Maturity: Lm ?  range ? - ? cm
Max length : 9.5 cm SL পুরুষ/ লিঙ্গ অনিধর্ারিত ; (Ref. 118583)
Short description
সনাক্তকারী নির্দেশক | বহিঃ অঙ্গ সংস্থান | মরফোমেট্রিক্স
পৃষ্ঠীয় নরম পাখনা দন্ড (মোট ) : 9 - 11; পায়ূর নরম পাখনা্তুন্ড: 21 - 27; কশেরুকা : 32 - 33. Astyanax bacalarensis is distinguished from its congeners in the Yucatan by the following characters: anal fin origin never overlapping last dorsal-fin ray (always overlapping in A. altior); head length 28% SL or less (27% or more in A. altior); predorsal length, mean 50.4% SL (mean 53% or more in A. altior and A. angustifrons); mean distance between origins of pelvic and anal fins, 20.5% SL (vs. mean 19.3% or less); humeral spot rectangular-triangular to oval (P-shaped to indistinct in A. belizianus and A. brevimanus) (Ref. 118583).
Life cycle and mating behavior
পরিপক্কতা | প্রজনন | ডিম ছাড়া | ডিমসমূহ | ডিম্বধারন ক্ষমতা | শুককীট
Schmitter-Soto, J.J., 2017. A revision of Astyanax (Characiformes: Characidae) in Central and North America, with the description of nine new species. J. Nat. Hist. 51(23/24):1-94. (Ref. 118583)
IUCN Red List Status (Ref. 130435: Version 2024-2)
Threat to humans
Harmless
Human uses
হাতিয়ার
Special reports
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ইন্টারনেট সুত্র
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=0.01096 (0.00493 - 0.02437), b=3.10 (2.93 - 3.27), in cm total length, based on LWR estimates for this Genus-body shape (Ref.
93245).
ট্রফিক পর্যায়ে (Ref.
69278): 2.9 ±0.4 se; based on size and trophs of closest relatives
স্থিতিস্থাপক (Ref.
120179): উচ্চ, সর্বনিম্ন প্রজন দ্বিগুনের সময় ১৫ মাস (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).