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Pseudochondrostoma polylepis, commonly known as Boga, is a cyprinid fish endemic to the Iberian Peninsula. It is characterized by its elongated, fusiform body and a subterminal mouth adapted for grazing on benthic algae and detritus. This species plays a significant ecological role in its native river systems.
Ciri-ciri Fizikal
- Bentuk badan
- elongated
- Warna
- Dorsal side is typically dark olive to brownish-green, fading to silvery flanks and a whitish belly. Fins are generally dusky, sometimes with a reddish tint, especially during breeding season.
- Jenis sisik
- cycloid
- Kedudukan mulut
- subterminal
- Ciri tersendiri
- Subterminal mouth with a horny cutting edge on the lower jaw, adapted for scraping algae., Numerous, small, cycloid scales (polylepis means 'many scales')., Absence of barbels., Lateral line complete and slightly decurved.
- Sirip dorsal
- Short, with 3-4 unbranched rays and 8-9 branched rays. Originates slightly anterior to the pelvic fin origin.
- Sirip ekor
- Deeply forked, with pointed lobes.
- Sirip pektoral
- Relatively short, rounded, with 15-17 rays.
- Sirip tersendiri
- Pelvic fins are abdominal, with 8-9 rays. Anal fin is short, with 3 unbranched and 5-6 branched rays.
Petua Pengenalan
Mouth structure
The most distinguishing feature is the subterminal mouth with a sharp, horny lower jaw, clearly visible when viewed from below or the side.
Scale count
High number of scales along the lateral line (typically 60-75) and around the caudal peduncle (20-24) helps differentiate it from other cyprinids.
Absence of barbels
Unlike many other European cyprinids, Pseudochondrostoma polylepis lacks barbels around its mouth.
Body shape and coloration
Its elongated, somewhat cylindrical body and typical olive-brown to silvery coloration are characteristic.
Habitat
- Jenis air
- freshwater
- Kedalaman
- Typically found in shallow to moderately deep sections of rivers and streams, usually less than 5 meters.
- Persekitaran
- Prefers clear, well-oxygenated rivers and large streams with moderate to strong currents and rocky or gravelly substrates. Often found in pools and runs with submerged vegetation or detritus.
- Julat geografi
- Endemic to the central and western Iberian Peninsula, primarily in the Tagus (Tajo) and Guadiana river basins, and their tributaries, in Spain and Portugal.
Maklumat Akuarium
- Tahap penjagaan: expert
- Perangai: peaceful
- Diet: herbivore
- Saiz tangki minimum: 500_liters
- Suhu: 10-22°C (50-72°F)
- Tahap pH: 6.5-8.0
- Kekerasan air: 5-20 dGH
- Keserasian: Best kept in species-specific tanks or with other large, peaceful, cold-water cyprinids. Avoid aggressive or fin-nipping species.
- Keperluan khas: Requires a well-oxygenated tank with strong filtration and ample swimming space. Substrate should be fine gravel or sand with smooth rocks and driftwood for enrichment. Live plants are beneficial but may be grazed upon. Mimic natural riverine conditions with moderate to strong current.
Maklumat Liar
- Status pemuliharaan: near threatened
- Musim: Spawning typically occurs from late spring to early summer (April to June), influenced by water temperature and flow. Activity levels are higher during warmer months and lower in winter.
- Harga pasaran: Not typically sold commercially for consumption; occasionally available for specialized aquarists at varying prices.
- Kepentingan komersial: low
- Rasa: Mild, somewhat earthy flavor, often described as having a 'river fish' taste.
- Tekstur: Firm, white flesh with small bones.
- Kaedah memasak: Fried, Baked, Grilled, Stewed
- Nilai pemakanan: Good source of protein and omega-3 fatty acids, typical of freshwater fish.
Fakta utama
Endemic Scraperinteresting
Pseudochondrostoma polylepis is an endemic species to the Iberian Peninsula, playing a crucial role in its river ecosystems by grazing on benthic algae and detritus.
Taxonomic Reclassificationevolution
Historically, this species was classified under the genus Chondrostoma. Recent molecular and morphological studies led to its reclassification into the genus Pseudochondrostoma, reflecting its distinct evolutionary lineage within Iberian cyprinids.
Dietary Adaptationbehavior
Its unique subterminal mouth with a horny lower jaw is a specialized adaptation for scraping periphyton and detritus from hard substrates, making it an important primary consumer in its habitat.
Conservation Concerninteresting
Despite being relatively widespread within its range, Pseudochondrostoma polylepis is listed as 'Near Threatened' due to habitat degradation, water pollution, dam construction, and competition/hybridization with introduced species.
Maklumat keselamatan
Selamat- Tahap keselamatan: safe
- Berbisa: Tidak
- Kebolehmakanan: edible
- Nota pengendalian: No specific handling precautions are required beyond standard fish handling practices to minimize stress to the fish. Handle gently to avoid damaging scales or fins. Not known to bite or possess any defensive spines.
Spesies serupa
Calandino
Pseudochondrostoma duriense
P. duriense has a more slender body, a smaller head, and typically fewer scales along the lateral line (50-60). Its geographic range is restricted to the Douro basin.
Boga del Guadiana
Pseudochondrostoma willkommii
P. willkommii has a more robust body, a larger head, and a slightly different mouth morphology. It is found in the Guadiana basin, often sympatric with P. polylepis in some areas, but genetic analysis is often required for definitive identification.
Boga del Ebro
Pseudochondrostoma miegii
P. miegii is found in the Ebro basin and has a more compressed body and a different scale count. Its mouth is also subterminal but with subtle morphological differences.
Klasifikasi saintifik
- Kerajaan
- Animalia
- Filum
- Chordata
- Kelas
- Actinopterygii
- Ordo
- Cypriniformes
- Keluarga
- Cyprinidae
- Genus
- Pseudochondrostoma
- Spesies
- Pseudochondrostoma polylepis
Terokai Boga
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