Classification / Names
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Characiformes (Characins) >
Characidae (Characins; tetras) > Stethaprioninae
Etymology: Hemigrammus: Greek, hemi = half + Greek, gramma = letter, signal (Ref. 45335); tocantinsi: Named for the rio Tocantins basin, where the new species occurs; noun in
apposition..
Environment: milieu / climate zone / depth range / distribution range
ນິເວດວິທະຍາ
; ນ້ຳຈືດ ກ່ຽວກັບ (ຢູ່)ເທິງຊັ້ນພື້ນດິນໃນທະເລເປີດ. Tropical; 13°S - 14°S, 47°W - 48°W
South America: Brazil. Occurs in the tributaries of the rio das Almas, rio Paranã drainage, upper rio Tocantins basin, Goiás State (Ref. 84464).
ຂະໜາດ / ນ້ຳໜັກ / Age
Maturity: Lm ? range ? - ? cm
Max length : 3.7 cm SL ຕົວຜູ້/ບໍ່ມີເພດ; (Ref. 84464)
Short description
ສະລີລະວິທະຍາ | ການວັດແທກຮູບຮ່າງລັກສະນະພາຍນອກຂອງດິນ,ສັດ,ປາ…
Hemigrammus tocantinsi differs from most congeners [except H. bellottii (Steindachner), H. bleheri Géry & Mahnert, H. boesemani Géry, H. brevis Ellis, H. cylindricus Durbin, H. cupreus Durbin, H. erythrozonus Durbin, H. geisleri Zarske & Géry, H. levis Durbin, H. mahnerti Uj & Géry, H. microstomus Durbin, H. mimus Böhlke, H. orthus Durbin, H. rhodostomus Ahl, H. rodwayi Durbin, H. tridens Eigenmann, H. skolioplatus Bertaco & Carvalho, and H. vorderwinkleri Géry] by the number of branched anal-fin rays, 15-17 (vs. less than 15 in H. analis Durbin, H. hyanuary Durbin, H. iota Durbin, and more than 17 on remaining species). From the species with the same range of branched anal-fin rays, Hemigrammus tocantinsi differs by the presence of 1-2 (mode 1) maxillary teeth (vs. 3-11 in H. bellottii, H. cylindricus, H. cupreus, H. mimus, and H. skolioplatus); longitudinal stripe posteriorly broad, larger than one scale depth or than pupil diameter (vs. thinner than one scale depth or pupil diameter or longitudinal stripe absent in H. bellottii, H. boesemani, H. brevis, H. erythrozonus, H. geisleri, H. levis, H. mahnerti, H. microstomus, H. orthus, H. rodwayi, H. tridens, and H. vorderwinkleri); caudal-fin lobes hyaline (vs. presence of a conspicuous broad black marginal or submarginal band across the distal part of caudal-fin lobes in H. bleheri and H. rhodostomus). Furthermore, Hemigrammus tocantinsi can be distinguished from all congeners by the color pattern of live specimens (reddish or orange in male and yellowish pigmented in female).
Lives in streams, in semi-lentic and lotic shallow areas (up to 1 m deep) with riparian vegetation composed by trees and shrubs. This new species was collected syntopically with Aspidoras albater, Astyanax sp., Characidium stigmosum, Corumbataia veadeiros, and Trichomycterus sp. Five specimens (UFRGS 11300, 25.1-27.1 mm SL) with stomach contents mainly composed by Diptera (pupae) and allochthonous insects, but also found were autochthonous insects and digested vegetal matter in a lesser amount (Ref. 84462).
Life cycle and mating behavior
ການຈະເລີນເຕັມໄວ | ການສືບພັນ | ການວາງໄຂ່ | ໄຂ່ | ຄວາມດົກຂອງໄຂ່ປາ | ຕົວອ່ອນ
Carvalho, F.R., V.A. Bertaco and F.C. Jerep, 2010. Hemigrammus tocantinsi: a new species from the upper rio Tocantins basin, Central Brazil (Characiformes: Characidae). Neotrop. Ichthyol. 8(2):247-254. (Ref. 84464)
IUCN Red List Status (Ref. 130435)
Threat to humans
Harmless
Human uses
ຂໍ້ມູນຕື່ມອີກ
ຊື່ສາມັນຄຳສັບຄ້າຍຄືກັນການເຜົາໃໝ້ພະລັງງານໂດຍປ່ຽນທາດອາຫານໃນຮ່າງກາຍໃຫ້ກາຍເປັນຊີ້ນແລະໜັງຜູ້ລ້າການສຶກສາຜົນກະທົບຂອງສານຜິດທີ່ມີຜົນກະທົບຕໍ່ລະບົບນິເວດການສືບພັນການຈະເລີນເຕັມໄວການວາງໄຂ່ການສັງລວມການວາງໄຂ່ຄວາມດົກຂອງໄຂ່ປາໄຂ່Egg development
Age/Sizeການເຕີບໃຫຍ່Length-weightLength-lengthLength-frequenciesການວັດແທກຮູບຮ່າງລັກສະນະພາຍນອກຂອງດິນ,ສັດ,ປາ…ສະລີລະວິທະຍາຕົວອ່ອນການປ່ຽນແປງຂອງຕົວອ່ອນການທົດແທນທີ່ຄວາມອຸດົມສົມບູນBRUVS
ເອກະສານອ້າງອີງການລ້ຽງສັດນ້ຳຂໍ້ມູນການລ້ຽງສັດນ້ຳສາຍພັນກຳມະພັນElectrophoresesການຖ່າຍທອດທາງກຳມະພັນຈາກພໍ່ແມ່ຫາລູກພະຍາດການປຸງແຕ່ງNutrientsMass conversion
ຜູ້ຮ່ວມມືຮູບStamps, Coins Misc.ສຽງຫອຍມີພິດຊະນິດນຶ່ງທີ່ອາໄສໃນທະເລຄວາມໄວປະເພດການລອຍເນື້ອທີ່ເຫືອກOtolithsສະໝອງວິໄສທັດ
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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=0.01000 (0.00244 - 0.04107), b=3.04 (2.81 - 3.27), in cm total length, based on all LWR estimates for this body shape (Ref.
93245).
ຊັ້ນເຂດຮ້ອນ (Ref.
69278): 3.0 ±0.4 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
