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Characiformes (Characins) >
Acestrorhamphidae (American tetras) > Thayeriinae
Etymology: Hollandichthys: From the Netherlands or a person with Holland name/surname; taramandahy: The specific name is in reference to the drainage of the type locality. In Tupi Guarani language,
Taramandahy (=Tramandaí) means winding river, or where is about to harvest (related to fish harvesting). A noun in apposition.
Eponymy: Dr William Jacob Holland (1848–1932) was a Jamaican-born American Presbyterian minister, entomologist and palaeontologist. [...] (Ref. 128868), visit book page.
पर्यावरण: पर्यावरण / जलवायु क्षेत्र / गहराई सीमा / वितरण सीमा
पारिस्थितिकी
; स्वच्छ जल, अलवण जल बेनथोपिलाजिक. Tropical
South America: Rio Maquiné and rio Três Forquilhas, rio Tramandaí system in Rio Grande do Sul and rio Mampituba and Araranguá drainages in Santa Catarina, Brazil.
आकार / वज़न / आयु
परिपक्व अवधि: Lm ? range ? - ? cm
Max length : 8.8 cm SL पुल्लिंग / अलिंग; (Ref. 94715)
संक्षिप्त वर्णन
पहचान कुंजी | आकृति विज्ञान | मौरफोमैटरिक्स
पृष्ठीय सौफट रेज़ (सम्पूर्ण) : 11; जानवरों की रीड़ का जोड़: 36 - 39. This species is distinguished from its congener Hollandichthys multifasciatus by having the following characters: a small, vertically expanded black spot present at base of median caudal-fin rays, clearly visible after fixation in formalin or alcohol (vs. black spot present on caudal fin; distinctive marks on adipose fin absent (vs. anterior portion of adipose fin black); humeral spot absent on specimens larger than 60.0 mm SL (vs. humeral spot always present; two black humeral spots present on small specimens of both species). Additional characters useful to diagnose H. taramandahy from H. multifasciatus include having 8-11 dorsal procurrent caudal-fin rays (vs. 10-15), 7-8 ventral procurrent caudal-fin rays (9-12), and shorter length of the penultimate branched anal-fin ray in adult males 9.0-12.3 in SL (vs. 11.1-20.8 in SL) (Ref. 94715).
Found in lateral puddles of rivers and very small tributaries with shallow and lentic black
waters, with mud and leaf on the bottom, and very dense riparian vegetation. Larger individuals measuring 7.0-8.0 cm SL were observed isolated and small specimens measuring 3.0-4.0 cm SL were encountered in groups of 3 to 6 fishes. Feeds on spiders, ants, beetles, and insect parts. Other fish collected along with this species include Astyanax laticeps, Astyanax sp., Cyanocharax itaime, Cyphocharax voga, Gymnotus sp., Hyphessobrycon luetkenii, Mimagoniates rheocharis, Phalloceros spiloura, and Steindachnerina biornata (Ref. 94715).
जीवन चक्र और संभोग व्यवहार
परिपक्व अवधि | पुनरुत्पत्ति | मछलीऔ का अंडे देना | अंडे | उपजाऊपन | लार्वा
Bertaco, V.A. and L.R. Malabarba, 2013. A new species of the characid genus Hollandichthys Eigenmann from coastal rivers of southern Brazil (Teleostei: Characiformes) with a discussion on the diagnosis of the genus. Neotrop. Ichthyol. 11(4):767-778. (Ref. 94715)
आईयूसीएन रेड लिस्ट स्थिति (Ref. 130435: Version 2025-2 (Global))
मनुष्यों के लिए ख़तरा
Harmless
मानव उपयोग
मात्स्यिकी: निर्वाह मात्स्यिकी
साधन
विशेष रिपोर्ट
XML डाउनलोड करें
इंटरनेट स्रोत
मॉडल पर आधारित अनुमान
जातिवृति विविधता सूचकांक (संदर्भ
82804): PD
50 = 0.7500 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01096 (0.00417 - 0.02880), b=3.08 (2.86 - 3.30), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
ट्रॉफिक स्तर (संदर्भ
69278): 3.2 ±0.4 se; based on size and trophs of closest relatives
लौटाव (संदर्भ
120179): ऊंचा, न्यूनतम जनसंख्या दुगनी समय अवलागत 15 महीने। (Preliminary K or Fecundity.).
मछली पकड़ने की भेद्यता (Ref.
59153): Low vulnerability (10 of 100).
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