Lacustricola pygmaeus

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Lacustricola pygmaeus Bragança, Skelton, Bills, Tweddle & Chakona, 2021

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drawing shows typical species in Procatopodidae.

Classification / Names ຊື່ສາມັນ | ຄຳສັບຄ້າຍຄືກັນ | Catalog of Fishes(ຕະກຸນ, ຊະນິດ) | ITIS | CoL | WoRMS | Cloffa

> Cyprinodontiformes (Rivulines, killifishes and live bearers) > Procatopodidae (African lampeyes) > Procatopodinae
Etymology: pygmaeus: The epithet pygmaeus, from the Latin pygmaei (singular pygmaeus), is an allusion to the very small or miniature size of Lacustricola pygmaeus, the smallest species within the L. hutereaui complex (Ref. 123968).

Environment: milieu / climate zone / depth range / distribution range ນິເວດວິທະຍາ

; ນ້ຳຈືດ ກ່ຽວກັບ (ຢູ່) ໄກ້ໜ້ານ້ຳໃນທະເລເປີດ. Tropical

ການແຜ່ກະຈາຍ ປະເທດ | ເຂດ FAO | ລະບົບນິເວດ | ການປະກົດຕົວ | Point map | ການແນະນຳ | Faunafri

Africa: Cuito, Cuanavale, and Okavango rivers, as well as Cuando and small upper Zambezi tributaries in a region comprising Angola and Zambia (Ref. 123968). Also known from Okavango Delta, Chobe River, in Botswana and Namibia and swamps of the Barotse floodplains in the upper Zambezi in Zambia, and Bukalo Channel in Namibia (Ref. 123968).

ຂະໜາດ / ນ້ຳໜັກ / Age

Maturity: Lm ?  range ? - ? cm
Max length : 2.1 cm SL ຕົວຜູ້/ບໍ່ມີເພດ; (Ref. 123968)

Short description ສະລີລະວິທະຍາ | ການວັດແທກຮູບຮ່າງລັກສະນະພາຍນອກຂອງດິນ,ສັດ,ປາ…

ຄີ (ໜາມ)ແຂງຢູ່ຫຼັງປາ (ທັງໝົດ): 0; ຄີຫຼັງຂອງປາ (ຄີອ່ອນ) (ທັງໝົດ): 10-12; ຄີ(ໜາມ) ແຂງຢູ່ຄີກົ້ນປາ ກຸ່ມປາກະດູກແຂງ ຄວາມຖີ່ຂອງກຸ່ມຖ່າຍທອດພັນ ປາທີ່ມີການເຄື່ອນຍ້າຍຈາກທະເລໄປຫານ້ຳຈືດ ແລະນ້ຳຈືດຫາທະເລ ປາທີ່ມີການເຄື່ອນຍ້າຍຈາກທະເລແລະໄປໄຂ່ຢູ່ນ້ຳຈືດ ຄີກົ້ນຂອງປາ ສັດທີ່ມີກະດູກສັນຫັຼງ ການຖ່າຍທອດທາງກຳມະພັນຈາກພໍ່ແມ່ຫາລູກ 0; ຄີກົ້ນຂອງປາ: 12 - 15; ສັດທີ່ມີກະດູກສັນຫຼັງ: 24 - 26. Diagnosis: Lacustricola pygmaeus is distinguished from L. centralis, L. jobaerti, L. johnstoni, L. jubbi, L. katangae, L. macrurus, L. matthesi, L. mediolateralis, L. moeruensis, L. myaposae, L. nigrolateralis, and L. stiassnyae by the possession of banded dorsal, anal, and caudal fins in males and also by the possession of a pointed premaxilla ascending process, in which the premaxilla medial surface is slightly convex (Ref. 123968). It is further distinguished from L. hutereaui, L. chobensis, and L. petnehazyi by an inconspicuous reticulate pattern on scale margins vs. conspicuous; banded anal, dorsal, and caudal fins in females vs. hyaline; faint bands in the middle rays of caudal fin of male vs. conspicuous bands; rounded caudal fin in males vs. elliptical; bright green-blue colour restricted to the area delimited by some of the flank scales vs. bright green colouration not restricted to scale area in L. chobensis and L. petnehazyi, and absent in L. hutereaui; quadrate posterior margin with a deep concavity vs. convex or about straight; first dorsal-fin ray inserted in a vertical to second and third anal-fin ray vs. fourth to eight (Ref. 123968). It is further distinguished from L. hutereaui by the absence of maxilla ventral sharp process vs. presence; retroarticular about the same size as anguloarticular ventral process vs. shorter; posteroventral extension on lachrymal vs. rectangular, without posteroventral extension; infraorbital canal anterior portion open, with three to four neuromasts vs. closed, with four pores; mandibular canal open, with two small neuromasts vs. closed, with four pores; head neuromasts placed in shallow grooves or on the same level as head surface vs. on deep grooves; possession of chromatophores close to eye, along infraorbital region vs. absence of chromatophores; posttemporal ventral arm not ossified vs. ossified; and by a cleithrum posterodorsal bone flap rounded vs. sinuous (Ref. 123968). Lacustricola pygmaeus is further distinguished from L. petnehazyi by the possession of 20-22 scales on longitudinal series vs. 24-27, and from L. chobensis by the possession of 26-30 caudal-fin rays vs. 21-24; 10-12 dorsal-fin rays vs. 6-8; and chromatophores along whole mid-body line of flank, forming an inconspicuous line vs. conspicuous (Ref. 123968).

ຊີວະສາດ     ຄຳແປສັບ (ຕ.ຢ. epibenthic)

It is a swamp-dwelling species that does not occur in riverine habitats (Ref. 123968).

Life cycle and mating behavior ການຈະເລີນເຕັມໄວ | ການສືບພັນ | ການວາງໄຂ່ | ໄຂ່ | ຄວາມດົກຂອງໄຂ່ປາ | ຕົວອ່ອນ

Main reference Upload your references | ເອກະສານອ້າງອີງ | ຜູ້ປະສານງານ | ຜູ້ຮ່ວມມື

Bragança, P.H.N., P.H. Skelton, R. Bills, D. Tweddle and A. Chakona, 2021. Revalidation and redescription of "Lacustricola" chobensis (Fowler, 1935) and description of a new miniature species of "Lacustricola" from southern Africa (Cyprinodontiformes: Procatopodidae). Ichthyology & Herpetology 109(1):123-137. (Ref. 123968)

IUCN Red List Status (Ref. 130435)


CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless





Human uses

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Estimates based on models

Phylogenetic diversity index (Ref. 82804):  PD50 = No PD50 data   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01122 (0.00514 - 0.02450), b=3.04 (2.87 - 3.21), in cm total length, based on all LWR estimates for this body shape (Ref. 93245).
ຊັ້ນເຂດຮ້ອນ (Ref. 69278):  3.0   ±0.3 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref. 59153):  Low vulnerability (10 of 100).