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Characiformes (Characins) >
Acestrorhamphidae (American tetras) > Thayeriinae
Etymology: yinyang: Derived from the ancient Taoistic Chinese philosophy and religion, describing two primal opposing but complementary principles said to be found in all non-static objects and processes in the universe. Yin, in Chinese, originally meant "sunless", as the northern side of a mountain, and as a concept evolved to embody the dark, passive, feminine element, corresponding to the night, the winter, the water, and the earth. Yang originally meant "sunny", as the southern side of a mountain, and it came to embody the bright, active, masculine element, corresponding to the day, the summer, the air and the fire. All forces in nature are expressions of yin and yang states. It is in their complementarity that balance is given to the universe. The new species is named in allusion to its complementary orange and black humeral blotches, which are reminiscent of the Taiji diagram, the pictorial representation of the state of undifferentiated absolute, encompassing both the yin and yang qualities (Ref. 82434).
पर्यावरण: पर्यावरण / जलवायु क्षेत्र / गहराई सीमा / वितरण सीमा
पारिस्थितिकी
; स्वच्छ जल, अलवण जल बेनथोपिलाजिक. Tropical
South America: known only from tributaries of the middle rio Tiquie, a tributary of the rio Uaupes, upper rio Negro basin, Amazonas state, Brazil
आकार / वज़न / आयु
परिपक्व अवधि: Lm ? range ? - ? cm
Max length : 2.9 cm SL पुल्लिंग / अलिंग; (Ref. 82434)
संक्षिप्त वर्णन
पहचान कुंजी | आकृति विज्ञान | मौरफोमैटरिक्स
पृष्ठीय रीढ़ (सम्पूर्ण) : 2; पृष्ठीय सौफट रेज़ (सम्पूर्ण) : 9; गुदा कांटा: 3 - 4; ऐनल सौफट रेज़: 19 - 23; जानवरों की रीड़ का जोड़: 33 - 34. Distinguished from all other species of the genus Hemigrammus by having (in life) an orange blotch, located between two dark humeral blotches, immediately ahead and slightly above the posterior, darker second humeral blotch. Differs further from all congeners, except Hemigrammus haraldi, Hemigrammus luelingi, Hemigrammus neptunus, Hemigrammus ocellifer, Hemigrammus pretoensis, and Hemigrammus pulcher, by the possession of two humeral blotches. Diagnosed from all these species by the absence of a blotch on the caudal peduncle (vs. caudal peduncle blotch present).
Body shape (shape guide): short and / or deep.
Caught in moderately large (2-6 m wide) streams, with clear water, carrying little suspended sediment. Also collected from dark-colored waters or muddy, silt-laden waters (Ref. 82434).
जीवन चक्र और संभोग व्यवहार
परिपक्व अवधि | पुनरुत्पत्ति | मछलीऔ का अंडे देना | अंडे | उपजाऊपन | लार्वा
Lima, F.C.T. and L.M. Sousa, 2009. A new species of Hemigrammus from the upper rio Negro basin, Brazil, with comments on the presence and arrangement of anal-fin hooks in Hemigrammus and related genera (Ostariophysi:Characiformes:Characidae). aqua, Int. J. Ichthyol. 15(3):153-168. (Ref. 82434)
आईयूसीएन रेड लिस्ट स्थिति (Ref. 130435: Version 2025-2 (Global))
मनुष्यों के लिए ख़तरा
Harmless
मानव उपयोग
साधन
विशेष रिपोर्ट
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इंटरनेट स्रोत
मॉडल पर आधारित अनुमान
जातिवृति विविधता सूचकांक (संदर्भ
82804): PD
50 = 0.5020 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01738 (0.00721 - 0.04190), b=3.05 (2.84 - 3.26), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
ट्रॉफिक स्तर (संदर्भ
69278): 3.0 ±0.4 se; based on size and trophs of closest relatives
मछली पकड़ने की भेद्यता (Ref.
59153): Low vulnerability (10 of 100).
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