Issue
Junior synonym Rhamdia wagneri (Günther, 1868) is considered as a synonym of Rhamdia guatemalensis (Günther, 1864) in Ref. 108688:575; 108948.
Environment: milieu / climate zone / depth range / distribution range
বাস্তুসংস্থান
; স্বাদু পানি সমুদতলে ভাসমান বেনথোপেলাজিক ; pH range: ? - 7.0; গভীরতার পরিসীমা 0 - 3 m (Ref. 35381). Tropical; 22°C - 28°C (Ref. 2060)
Central and South America: Mexico to central Argentina.
আকৃতি / ওজন / Age
Maturity: Lm ? range ? - ? cm
Max length : 61.0 cm TL পুরুষ/ লিঙ্গ অনিধর্ারিত ; (Ref. 40637); সবের্াচ্চ প্রকাশিত ওজন : 4.0 kg (Ref. 40637)
Occurs in littoral creeks, over sandy bottoms covered with dead leaves (Ref. 27188). Inhabits also lakes and rivers, but seems to prefer rivers with a very slight current (Ref. 6868). Prefers a muddy bottom covered with leaves and decaying wood, the latter providing for hiding places during the day (Ref. 35381). Feeds on fish and insects (Ref. 27188), benthic zooplankton and crustaceans (Ref. 35381). Omnivorous (Ref. 79585). Mainly nocturnal (Ref. 11225). Possesses poisonous spiny rays. Its sex ratio is 2:1 in favor of females. The male's reproductive apparatus includes multi-lobed testicles and accessory organs for secretion and storage. Fertilization is external. Non-sticking demersal eggs (1.1 to 2.8 mm diameter) are laid down, hatching after about 48 hours at 22°C. Ten days later, the larvae weigh approximately 100 mg but growth is slow (0.5 to 1.15 g per day).
Life cycle and mating behavior
Maturities | প্রজনন | Spawnings | Egg(s) | Fecundities | শুককীট
Hernández, C.L., A. Ortega-Lara, G.C. Sánchez-Garcés, M.H. Alford, 2015. Genetic and morphometric evidence for the recognition of several recently synonymized species of Trans-Andean Rhamdia (Pisces: Siluriformes: Heptapteridae). Copeia 103(3):563-579. (Ref. 108688)
IUCN Red List Status (Ref. 130435)
Threat to humans
Harmless
Human uses
মৎস্য: গৌণ বাণিজ্যিক ; এ্যাকুয়াকালচার (জলজ পালন) : বাণিজ্যিক
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=0.00891 (0.00753 - 0.01055), b=3.02 (2.97 - 3.07), in cm total length, based on LWR estimates for this species (Ref.
93245).
ট্রফিক পর্যায়ে (Ref.
69278): 3.9 ±0.3 se; based on diet studies.
স্থিতিস্থাপক (Ref.
120179): উচ্চ, সর্বনিম্ন প্রজন দ্বিগুনের সময় ১৫ মাস (Fec=41,334).
Fishing Vulnerability (Ref.
59153): Moderate vulnerability (44 of 100).
Nutrients (Ref.
124155): Calcium = 91.5 [50.5, 198.1] mg/100g; Iron = 1.02 [0.58, 1.80] mg/100g; Protein = 16.5 [15.4, 17.6] %; Omega3 = 0.239 [0.098, 0.592] g/100g; Selenium = 51.7 [20.4, 122.1] μg/100g; VitaminA = 55.8 [19.4, 147.0] μg/100g; Zinc = 1.55 [1.06, 2.24] mg/100g (wet weight);
