Stygichthys typhlops, Blind tetra

Stygichthys typhlops Brittan & Böhlke, 1965

Blind tetra
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No photo available for this species.
No drawings available for Acestrorhamphidae.

klasifikasi / Nama Nama-nama umum | Sinonim (persamaan) | Catalog of Fishes(Marga, Jenis) | ITIS | CoL | WoRMS | Cloffa

> Characiformes (Characins) > Acestrorhamphidae (American tetras) > Stygichthyinae
Etymology: Stygichthys: Greek, stygos = the underworld of ancient Greece mithology + Greek, ichthys = fish (Ref. 45335).

Lingkungan: lingkungan / zona iklim / kisaran kedalaman / jangkauan distribusi Ekologi

; air tawar pelagis, permukaan. Tropical; 16°S - 20°S

Penyebaran Wilayah | Daerah-daerah FAO | Ekosistem | Kemunculan | peta titik | Introduksi | Faunafri

South America: upper São Francisco River basin in Minas Gerais, Brazil.

Ukuran / Berat / umur

Kematangan: Lm ?  range ? - ? cm
Max length : 2.4 cm SL jantan/; (Ref. 38376)

Biologi     Daftar kata (contoh epibenthic)

The specimens were collected from two shallow wells, at Fazenda do Seu Roque which is still occasionally used as a source of water for cattle, and the shallow, abandoned well at Fazenda do Lajeado. Both have similar physico-chemical characteristics, with the pH and conductivity typical of limestone drainages (Fazenda do Seu Roque: pH 6.98, conductivity 0.683 μsm cm−1, 25·3°C and salinity 0·02; Fazenda do Lajeado: pH 7·0, conductivity 0·647 μsm cm−1, 25·8◦ C and salinity 0·02%). Laboratory and field observations demonstrate that this species is predominantly a midwater swimmer; when undisturbed, it remains almost stationary in midwater, with the body inclined at a 10-40° angle, head facing either up or down, or moving slowly, with the mouth slightly open. It is apparently solitary and when in groups (in laboratory), they remain indifferent to each other, not schooling and if there is contact by chance, it is followed by mutual avoidance movements, usually (but not always) with the smaller individual withdrawing for a short distance, some intraspecific agonistic biting attempts during feeding were also observed. The surface feeding behaviour in the laboratory of recently captured individuals, associated with the fact that phreatic waters are generally food-poor, suggests that in nature, these fish concentrate at the upper part of the aquifer where food input is higher in these sectors, as organic matter washes down from the surface. Ostracods were also observed in radiographs of the stomachs of five of the 16 specimens preserved in the field. Specimens were collected with hand nets and minnow-traps baited with commercial fish pellets and dry cat food. During collection with hand-nets in wells, the fish reacted with a quick fleeing movement only when the net was at close range. This reaction plus the limited responsiveness to live prey as initially observed in the laboratory, indicates a low dependence on mechanosensory systems, probably associated with the loss of the lateral line on the body. There is no clear reaction to light, because they are either insensitive to it or behaviourally unresponsive to light conditions (Ref. 84216).

Siklus hidup dan perilaku kawin Kematangan | Reproduksi, perkembang biakan | Pemijahan | telur-telur | Fekunditas | Larva

rujukan utama Unggah referensi Anda | Acuan | Koordinator | mitra

Proudlove, G.S., 1997. A synopsis of the hypogean fishes of the world. p. 351-354. In Proceedings of the 12th International Congress of Speleology, La Chaux de Fonds, Switzerland. vol. 3. (Ref. 27297)

Status IUCN Red List (Ref. 130435: Version 2025-2 (Global))

  terancam (EN) (B2ab(ii,iii)); Date assessed: 07 November 2018

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

ancaman kepada manusia

  Harmless





penggunaan manusia

FAO - Publication: search | FishSource |

informasi lanjut

Ekologi trofik
Item makanan (mangsa)
Komposisi makanan
Konsumsi makanan
Ransum makanan
Pemangsa
Ekologi
Ekologi
Dinamika populasi
Parameter pertumbuhan
Maks. usia / ukuran
Panjang-berat rel.
Panjang-panjang rel.
ukuran frekuensi
Konversi massa
pemulihan
Kelimpahan
Siklus hidup
Reproduksi, perkembang biakan
Kematangan
Kedewasaan / insang rel.
Fekunditas
Pemijahan
Agregasi pemijahan
telur-telur
pekembangan telor
Larva
Dinamika larva
Penyebaran
Wilayah
Daerah-daerah FAO
Ekosistem
Kemunculan
Introduksi
BRUVS - Video
Anatomi
Area insang
Otak
Otolith
Fisiologi
Komposisi tubuh
Nutrisi
Konsumsi oksigen
Jenis renang
Kecepatan berenang
Pigmen visual
Suara ikan
Penyakit & Parasit
Toksisitas (LC50)
Genetika
genom
Genetika
Heterozigositas
Diturunkan
Keanekaragaman Genetik
Yang berhubungan dengan manusia
Sistem akuakultur
profil budidaya air
Strain
Kasus Ciguatera
Perangko, koin, dll.
Penjangkauan
mitra
Taksonomi
Nama-nama umum
Sinonim (persamaan)
Morfologi
Morfometrik
Gambar
Acuan
Acuan

Alat, peralatan

E-book | Penuntun lapangan | tanda freqkuenci panjang | peringkat sejarah hidup | peta titik | Tangkap-MSY |

laporan khas

semak penyelenggaraan akuarium | semak helaian fakta spesis | semak helaian fakta aqulcalture

muat turun XML

ringkasan halaman | Data titik | Nama-nama umum | fotos/gambar

Sumber internet

AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | Websites from users | semak peneliti ikan | CISTI | Catalog of Fishes: Marga, Jenis | DiscoverLife | ECOTOX | FAO - Publication: search | Faunafri | Fishipedia | Fishtrace | GloBI | Google Books | Google Scholar | Google | IGFA World Record | OneZoom | Open Tree of Life | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Socotra Atlas | TreeBase | Tree of Life | Wikipedia: pergi, Cari | World Records Freshwater Fishing | Zoobank | Catatan Zoologi

Estimasi berdasarkan model

Indeks keanekaragaman filogenetik
(Acuan 82804) 		PD50 = 1.0000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight a=0.01995 (0.00906 - 0.04395), b=3.01 (2.83 - 3.19), in cm total length, based on all LWR estimates for this body shape (Ref. 93245).
Tingkat Trofik
(Acuan 69278) 		3.0   ±0.4 se; based on size and trophs of closest relatives
Daya lenting
(Acuan 120179) 		Tinggi, Waktu penggandaan populasi minimum kurang dari 15 bulan (Preliminary K or Fecundity.).
Kerentanan Penangkapan Ikan
(Ref. 59153) 		Low vulnerability (10 of 100). 🛈