分類 / Names
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Cichliformes (Cichlids, convict blennies) >
Cichlidae (Cichlids) > Pseudocrenilabrinae
Etymology: Otopharynx: Greek, ous = hear + Greek, pharyngx = pharynx (Ref. 45335); aletes: From the Greek masculine nominative singular noun άλέτης (alétes), a grinder; the name alludes to the well-defined group of conspicuously enlarged molariform teeth on the lower pharyngeal bone; a noun in apposition (Ref. 119408).
Environment: milieu / climate zone / depth range / distribution range
生態学
; 新鮮な水 底生の漂泳性. Tropical
Africa: Lake Malawi off Bua Point in Malawi (Ref. 119408), possibly also Senga Bay (Ref. 119408).
サイズ / 重さ / 年齢
Maturity: Lm ? range ? - ? cm
Max length : 10.7 cm SL オス/雌雄の選別がない; (Ref. 119408)
簡単な記述
形態学 | 形態計測学
背面の脊椎 (合計): 16; 背鰭 (合計): 11-12; 肛門の骨 3; 臀鰭: 8 - 9. Diagnosis: A smallish laterally spotted haplochromine distinguished by the following characters in combination: suprapectoral spot mostly below upper lateral line but extending above it by about one-half to one scale; 10-11 gill rakers on lower outer arch; and lower pharyngeal bone with posteromedian teeth molariform with stout shafts and rounded crowns (Ref. 119408). The placement of the suprapectoral spot overlapping the upper lateral line distinguishes Otopharynx aletes from O. brooksi, O. lithobates, and O. ovatus, al of which have the suprapectoral spot entirely below and usually separated from the upper lateral line; Otopharynx aletes has more scales in the lateral line, 34-36, than 31-33 in O. brooksi, 31-33 in O. spelaeotes, 29-31 in O. antron, 30-32 in O. tetraspilus, and 30-33 in O. tetrastigma, but fewer than O. decorus, which has 36-38 and which also has 13-14 soft dorsal rays vs. 11-12 in O. aletes; with 10-11 gill rakers on the lower outer arch, O. aletes is readily separated from O. auromarginatus with 14-18; its longer caudal peduncle, 1.6-2.0 times as long as deep, and shallowly emarginate caudal fin distinguish O. aletes from O. selenurus, with caudal peduncle 1.0-1.5 times as long as deep, caudal fin crescentically emarginate; the bicuspid outer jaw teeth, molariform pharyngeal teeth, and seven to eight subdorsal bars differentiate O. aletes from O. speciosus, with outer jaw teeth unicuspid, pharyngeal teeth all small, bicuspid; about four subdorsal bars; the presence of seven to eight vertical bars below dorsal-fin base separates O. aletes from O. argyrosoma, which lacks vertical bars; the unthickened, nonlobate lips differentiate O. aletes from O. pachycheilus, which has lips thickened, medially lobate; the 16 dorsal-fin spines, absence of distinct equidistant dorsal midline spots, and offshore habitat on sand or soft bottom distinguish O. aletes from O. heterodon, which has 17-18 dorsal-fin spines, about five distinct dorsal midline spots, and inhabits rocky shores (Ref. 119408). Trematocranus brevirostris somewhat resembles O. aletes, but in O. aletes the suprapectoral spot is largely below the upper lateral line but extends above it by about one-half to one scale vs. placed more above than below the upper lateral line, at least in the lectotype; the cephalic lateral-line system is not enlarged vs. pores and canals inflated; the dorsal fin has 11-12 segmented rays vs. 9; there are 54-67 outer upper-jaw teeth vs. about 43; the posteromedian teeth on the lower pharyngeal bone are molariform with stout shafts and rounded crowns vs. slightly enlarged but cuspidate; and the caudal peduncle length/depth ratio is 1.6-2.0 vs. 1.2-1.4 (Ref. 119408). Compared to Otopharynx panniculus, O. aletes has more scales in the lateral line, 34-36 vs. 31-33; and a heavier lower pharyngeal jaw bone and dentition, including enlarged, molarized teeth posteromedially vs. small, laterally compressed, bicuspid teeth; posterior horns thickened vs. slender; and anterior blade shorter, deeper vs. longer, more shallow (Ref. 119408). Compared to O. peridodeka, O. aletes has the hemijaws in ventral view divergent caudally and distant from each other vs. approximated, convergent; and a heavier lower pharyngeal bone, with horns thicker, posteromedian teeth enlarged, and molarized with nearly hemispherical crowns vs. more lightly built, horns narrower, posteromedian teeth somewhat enlarged but more laterally compressed, cuspidate (Ref. 119408).
Life cycle and mating behavior
成熟 | 繁殖 | 放精 | 卵 | 生産力 | 幼生
Oliver, M.K., 2018. Six new species of the Cichlid genus Otopharynx from Lake Malaŵi (Teleostei: Cichlidae). Bulletin of the Peabody Museum of Natural History 59(2):159-197. (Ref. 119408)
Human uses
水産業:
より多くの情報
共通名の類義語代謝捕食動物生態毒性繁殖成熟放精卵の集合体生産力卵卵の開発
Age/Size成長体長-重さLength-length体長組成形態計測学形態学幼生幼生の動力補充豊度BRUVS
参考文献水産養殖水産養殖の紹介緊張遺伝子のElectrophoreses遺伝病気行列NutrientsMass conversion
協力者画像Stamps, Coins Misc.音シガテラ（食中毒の名前）速度泳ぐ 型式カマOtoliths脳視覚
用具
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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 = No PD50 data [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).
栄養段階 (Ref.
69278): 3.4 ±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).
