Hemibrycon yacopiae Román-Valencia & Arcila-Mesa 2010

Diagnosed from other species of Hemibrycon by having the following characters: first laterosensorial infraorbitals canal in contact with the posterior end of antorbital; tip of the supraoccipital spine widened; posterior end of ectopterygoid failing to come in contact with the quadrate bone (vs. in contact, except Hemibrycon raqueliae); posterior edge of palatine more widened than the anterior edge of ectopterygoid (vs. posterior edge of thepalatine approximately the same size, except for Hemibrycon paez). Distinguished from Hemibrycon colombianus by having 40-42 pored scales in the lateral line (vs. 46-54) and 10-14 predorsal scales (vs. 14-18), and from the other species of upper and middleMagdalena drainage Hemibrycon by having 4-6 scales between the lateral line and thepelvic fins (vs. > 6) (Ref. 83529).Description: Dorsal fin iii, 7-8; anal fin iii-iv,20-26; pectoral fin ii,9-11; pelvic fin ii,6 (Ref. 83529).

Dorsal soft rays (total): 1011; Vertebrae: 40 - 41

Collection sites are characterized by surface water temperature 20.1-24.6°C, air temperature 20.7-26.5°C, dissolved oxygen 5.0-7.4mg/l and 69-96% saturation, pH 7.3-7.6, width two-three m, substrate composed of stone and sand, and water color dark greyto crystalline (Ref. 83529).

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Hemibrycon yacopiae Hemibrycon generoko animalia da. Arrainen barruko Actinopterygii klasean sailkatzen da, Characidae familian.

麗頰半齧脂鯉，為輻鰭魚綱脂鯉目脂鯉亞目脂鯉科的其中一個種，分布於南美洲哥倫比亞馬格達萊納河流域，體長可達8.9公分，棲息在底中層水域，生活習性不明。