Classification / Names
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Perciformes/Percoidei (Perchs) >
Percidae (Perches) > Percinae
Etymology: Gymnocephalus: Greek, gymnos = naked + Greek, kephale = head (Ref. 45335); ambriaelacus: The specific name name is the Latin translation "of the lake of the Ammer region", "ambriae" being the genitive of the latinized Celtic word for Ammer region, i. e. ambro, and "lacus" being the genitive of lacus, the Latin word for lake. Lake Ammersee is known historically as "Ambriae Lacus" (Graesse 1909). A noun
in apposition.
Environment: milieu / climate zone / depth range / distribution range
ນິເວດວິທະຍາ
; ນ້ຳຈືດ ກ່ຽວກັບ (ຢູ່)ເທິງຊັ້ນພື້ນດິນໃນທະເລເປີດ. Temperate
Europe: endemic to Lake Ammersee, upper Danube basin in southern Germany.
ຂະໜາດ / ນ້ຳໜັກ / Age
Maturity: Lm ?  range ? - ? cm
Max length : 11.7 cm SL ຕົວຜູ້/ບໍ່ມີເພດ; (Ref. 84545)
Short description
ຕົວທີ່ໃຊ້ໃນການຈຳແນກຊະນິດ | ສະລີລະວິທະຍາ | ການວັດແທກຮູບຮ່າງລັກສະນະພາຍນອກຂອງດິນ,ສັດ,ປາ…
ຄີ (ໜາມ)ແຂງຢູ່ຫຼັງປາ (ທັງໝົດ) : 14 - 16; ຄີຫຼັງຂອງປາ (ຄີອ່ອນ) (ທັງໝົດ) : 10 - 12; ຄີ(ໜາມ) ແຂງຢູ່ຄີກົ້ນປາ
ກຸ່ມປາກະດູກແຂງ
ຄວາມຖີ່ຂອງກຸ່ມຖ່າຍທອດພັນ
ປາທີ່ມີການເຄື່ອນຍ້າຍຈາກທະເລໄປຫານ້ຳຈືດ ແລະນ້ຳຈືດຫາທະເລ
ປາທີ່ມີການເຄື່ອນຍ້າຍຈາກທະເລແລະໄປໄຂ່ຢູ່ນ້ຳຈືດ
ຄີກົ້ນຂອງປາ
ສັດທີ່ມີກະດູກສັນຫັຼງ
ການຖ່າຍທອດທາງກຳມະພັນຈາກພໍ່ແມ່ຫາລູກ: 2; ຄີກົ້ນຂອງປາ: 5 - 6. Distinguished from Gymnocephalus cernua by having smaller angle between the posterior dorsal fin margin and the caudal peduncle (90-110° vs. 113-154°), larger eye diameter (10.2-12.3 % SL vs. 7.9-10.5 % SL) and an irregular pattern of large dorsolateral dark blotches vs. a pattern of small dots. Differs from Gymnocephalus cernua by having a deeper body (26.1-33.6 % SL vs. 20.1-30.7 % SL), longer base of the spinous part of the dorsal fin (36.1-41.9 % SL vs. 28.8-39.6 % SL) and higher mean and modal number of dorsal fin spines (modal 15 vs 14). Diagnosed from Gymnocephalus baloni by the combination of the following characters: larger eye diameter (10.2-12.3 % SL vs. 8.2-10.5 % SL), smaller caudal peduncle depth (7.7-8.9 % SL vs. 7.4-10.1 % SL), higher mean and modal number of pectoral fin rays (15 vs. 13) and a steeper convex dorsal profile of the snout (Ref. 84545).
Ripe females were collected in shallow water between 3-5 m depth in May and spawned immediately in captivity (Ref. 84545). Eggs, measuring ~1 mm in diameter, were observed on the bottom and were only weakly adhesive, but some of them were floating (Ref. 84545).
Life cycle and mating behavior
ການຈະເລີນເຕັມໄວ | ການສືບພັນ | ການວາງໄຂ່ | ໄຂ່ | ຄວາມດົກຂອງໄຂ່ປາ | ຕົວອ່ອນ
Geiger, M.F. and U.K. Schliewen, 2010. Gymnocephalus ambriaelacus, a new species of ruffe from Lake Ammersee, southern Germany (Teleostei, Perciformes, Percidae). Spixiana 33(1):119-137. (Ref. 84545)
IUCN Red List Status (Ref. 130435: Version 2024-1)
Threat to humans
Harmless
Human uses
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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=0.01047 (0.00465 - 0.02359), b=3.05 (2.86 - 3.24), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
ຊັ້ນເຂດຮ້ອນ (Ref.
69278): 3.4 ±0.4 se; based on size and trophs of closest relatives
ຄວາມຢືດຢຸ່ນ (Ref.
120179): ສູງ, ປະຊາກອນຕຳ່ສຸດທີ່ໃຊ້ເວລາສອງໜ້ອຍກວ່າ 15 ເດືອນ (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).