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Gymnotiformes (Knifefishes) >
Hypopomidae (Bluntnose knifefishes)
Etymology: Brachyhypopomus: Greek, brachys, eia = short + Greek, hypo = under + Greek, poma, -atos = cover (Ref. 45335); batesi: Named for Henry Walter Bates (1825-1892), British naturalist and explorer, for his contributions to the natural history of the Tefé region, where the type series was collected..
Environment: milieu / climate zone / depth range / distribution range
বাস্তুসংস্থান
; স্বাদু পানি সমুদতলে ভাসমান বেনথোপেলাজিক ; pH range: 4.5 - 6.0. Tropical; 24°C - 27°C (Ref. 116763)
South America: Central Amazon and upper rio Negro in Brazil and Colombia.
আকৃতি / ওজন / Age
Maturity: Lm ? range ? - ? cm
Max length : 12.0 cm TL পুরুষ/ লিঙ্গ অনিধর্ারিত ; (Ref. 116763); 12.1 cm TL (female)
পায়ূর নরম পাখনা্তুন্ড: 159 - 173. Brachyhypopomus batesi can be distinguished from other species of the genus Brachyhypopomus by the following combination of characters: anal fin with 165-179 rays (vs. 180-293 in B. alberti, B. beebei, B. belindae, B. bennetti, B. brevirostris, B. bullocki, B. diazi, B. gauderio, B. hendersoni, B. janeiroensis, B. jureiae, B. occidentalis, B. palenque, B. verdii, and B. walteri); presence of scales in entire middorsal region, although sparse and hard to see in some specimens (vs. absence in middorsal region of anterior third of body in B. benjamini and B. provenzanoi); absence of accessory electric organ over the opercular region (vs. presence in B. bombilla, B. menezesi, and B. regani; head depth at occiput 61.0-67.9% HL, (vs. 71.4-94.6% in B. cunia, B. draco, B. flavipomus, B. hamiltoni, and B. pinnicaudatus); and absence of scattered conspicuous black or charcoal flecks on flanks (vs. presence in B. sullivani) (Ref. 116763).
Facultative air-breathing in the genus (Ref. 126274); The type series was sampled from the lower, seasonally flooded reaches of low-conductivity blackwater rainforest streams that flow into lago Tefé, and lago Amanã (large blackwater ria lakes of similar conductivity to the streams). Mostly found in marginal root mats or submerged leaf litter along stream edges. The recorded water parameters at the time of sampling were the following: conductivity 10-30 μScm-1, dissolved oxygen 2.0-5.2 mgl-1, temperature 24.3-27.0°C, and pH 4.5-6.0. During the high water period, this species disappears from the flood-swollen lower stream reaches which is possibly due to declining dissolved oxygen levels, and apparently moves upstream to terra firme stream reaches above the seasonal river-floodplain flood influence. Breeds during the early rising-water period, which in the Tefé region corresponds to the rainy season. Occurrence of this species outside the sampling area of type series localities are all recorded from low-conductivity blackwater rainforest streams. In the region of the type locality, Brachyhypopomus batesi co-exists in geographical sympatry and ecological syntopy with the following species occurring in terra firme stream: B. beebei, B. brevirostris, B. sullivani, and B. walteri. It is also allotropic in distribution with B. belindae, B. bennetti, B. flavipomus, B. hamiltoni, B. hendersoni, B. pinnicaudatus, and B. regani. In the rio Negro, it occurs in geographical sympatry with B. beebei, B. brevirostris, B. bullocki, B. hendersoni, B. regani, B. sullivani, and B. Walteri. Feeds on aquatic insect larvae (primarily Chironomidae), and other small aquatic invertebrates (Ref. 116763).
Life cycle and mating behavior
পরিপক্কতা | প্রজনন | ডিম ছাড়া | ডিমসমূহ | ডিম্বধারন ক্ষমতা | শুককীট
Crampton, W.G.R., C.D. de Santana, J.C. Waddell and N.R. Lovejoy, 2017. A taxonomic revision of the Neotropical electric fish genus Brachyhypopomus (Ostariophysi: Gymnotiformes: Hypopomidae), with descriptions of 15 new species. Neotrop. ichthyol. 14(4):e150146. (Ref. 116763)
IUCN Red List Status (Ref. 130435)
Threat to humans
Harmless
Human uses
আরো তথ্য
প্রচলিত নাম সমূহপ্রতিনাম সমূহবিপাকশিকারী প্রাণী সমূহপরিবেশ বিষাক্ততাবিদ্যাপ্রজনন পরিপক্কতা ডিম ছাড়া ডিমের সংগ্রহ ডিম্বধারন ক্ষমতা ডিমসমূহEgg development
Age/Sizeবৃদ্ধিLength-weightLength-lengthLength-frequenciesমরফোমেট্রিক্সবহিঃ অঙ্গ সংস্থানশুককীট শুককীটের সত্রিুয়তা নির্বাচন প্রাচুর্য BRUVS
সূত্র সংখ্যা এ্যাকুয়াকালচার (জলজ পালন) এ্যাকুয়াকালচার নকশা বংশ বংশানুগতিবিদ্যাElectrophoresesউতরাধিকার সুত্রে পাওয়া যোগ্যতারোগ প্রক্রিয়াজাতকরণ NutrientsMass conversion
সহযোগী ছবি সমূহStamps, Coins Misc.শব্দ ক্রোমোজোমের ধরণ গতি সাতাঁরের কায়দা ফুলকা এলাকাOtolithsমস্তিস্ক সমূহদৃষ্টি
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ইন্টারনেট সুত্র
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=0.00380 (0.00145 - 0.00994), b=3.06 (2.83 - 3.29), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
ট্রফিক পর্যায়ে (Ref.
69278): 3.1 ±0.4 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
