分類 / Names
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Cichliformes (Cichlids, convict blennies) >
Cichlidae (Cichlids) > Geophaginae
Etymology: Dicrossus: Greek, di = two + Greek, krossoi = tassel (Ref. 45335); gladicauda: The specific name is derived from the Latin gladius, meaning sword, and cauda, meaning tail, alluding to the sword-like streamer of the dorsal lobe of the caudal fin in adult males..
Issue
Species name erroneously spelled gla*u*dicauda in CofF (February, 2010).
Environment: milieu / climate zone / depth range / distribution range
生態学
; 新鮮な水 底生の漂泳性; pH range: 4.4 - ?. Tropical; 24°C - ? (Ref. 76847)
South America: lower río Atabapo drainage in Colombia.
サイズ / 重さ / 年齢
Maturity: Lm ? range ? - ? cm
Max length : 4.2 cm SL オス/雌雄の選別がない; (Ref. 76847)
簡単な記述
検索表 | 形態学 | 形態計測学
背面の脊椎 (合計) : 14 - 15; 背鰭 (合計) : 8; 肛門の骨: 3; 臀鰭: 6 - 7. Distinguished from all congeners by the conspicuously asymmetrical caudal fin characterized by the long filamentous streamer of its dorsal lobe in adult males. Most similar to Dicrossus filamentosus, but can be differentiated by having a lyreate caudal fin, both the marginal rays of the dorsal and the ventral part of caudal fin are distally produced into a filamentous streamer (Ref. 76847).
Found in a typical blackwater habitat with clear, acidic and very soft tea-colored water, with total and temporary hardness <1° dH (Ref. 76847). Encountered along the bank of small rivulet in zones of extremely shallow water, approximately between 10 and 50 cm depth, where this species occurs either in a layer of dead leaves covering the bottom of the bank side or among the submerged terrestrial vegetation (Ref. 76847).
Life cycle and mating behavior
Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 幼生
Schindler, I. and W. Staeck, 2008. Dicrossus gladicauda sp. N.- a new species of crenicarine dwarf cichlids (Teleostei: Perciformes: Cichlidae) from Colombia, South- America. Vertebrate Zoology 58(1):67-73. (Ref. 76847)
IUCNのレッドリストの状況は (Ref. 130435)
絶滅危惧 (EN) (B1ab(iii)); Date assessed: 23 October 2020
Human uses
用具
特記事項
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インターネットの情報源
Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5312 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00724 (0.00283 - 0.01852), b=3.13 (2.91 - 3.35), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
栄養段階 (Ref.
69278): 3.2 ±0.4 se; based on size and trophs of closest relatives
回復力 (Ref.
120179): 高い, １５か月以下の倍増期間の最小個体群 (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
