Mogurnda clivicola

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Mogurnda clivicola
Flinders Ranges Mogurnda imported from iNaturalist photo 21155582 on 20 April 2022.jpg
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Gobiiformes
Family: Eleotridae
Genus: Mogurnda
Species:
M. clivicola
Binomial name
Mogurnda clivicola

Mogurnda clivicola, commonly known as the Flinders Ranges mogurnda, Flinders Ranges purple-spotted gudgeon, Barcoo, or Bulloo mogurnda, [2] is a central Australian gudgeon of the family Eleotridae.

Contents

Distribution

Flinders Ranges gudgeons are found in permanent water in an isolated set of spring-fed creeks in the southern Gammon Ranges National Park in the arid South Australian outback. [3] These creeks are often in very steep-sided, rocky gorges. [2] [3] This fish's habitat is usually isolated into separate pools and then subject to floods that change the water level by several metres.[ citation needed ]

These fish have also been recorded in samples taken from the Barcoo and Bulloo Rivers in Queensland away from the main population, in the very different habitat of larger, muddy-bottomed rivers. [2] [3]

Description

Flinders Ranges mogurndas are medium-sized fish, with a maximum total length around 13 cm. [3] [4] [I] They are dark with a fine mottling of dark grey blotches on the upper side with semi-translucent fins. Usually their body is a paler colour underneath. These fish have a series of burnt orange-coloured stripes running backwards down their cheeks looking like warpaint. Roughly around the lateral line is a display of burnt orange-coloured spots interspersed with paler spots, with a single darker spot on the caudal peduncle. Males develop spectacular spawning colours in summer, namely a more brilliant display of orange spots along the side and to the tail. The anal and spiny and soft dorsal fins are edged with a tiny, iridescent, blue-white stripe. These stripes are somewhat subtle on most of the fins, but are prominent and eye-catching on the spiny dorsal fin. The males also develop a large amount of fat on the top of their heads, giving them a bulbous appearance.[ citation needed ]

These fish have, in recent times been victims of a dramatic, piebald discolouration of unknown origin.[ citation needed ]

Ecology and behaviour

In the Flinders Ranges, M. clivicola is the only species of fish found in the rocky pools which they inhabit. [2] They will bask lying on the shallow shelves of deeper rock pools, with their tails to one side.[ citation needed ] From above, in this position, they closely resemble the fallen gum leaves on the substrate. In the Barcoo River, the species usually co-exists with up to 10 other fish species in the typically mud-bottomed lowland streams of that system. [2] Their predators consist mostly of larger birds.[ citation needed ] They are presumed to be ambush predators. [2] Tadpoles, insects, and other macroinvertebrates probably form a large part of their diet.[ citation needed ] Breeding and spawning is a complex ritual spread over days. [2] These fish spawn when the water temperature reaches 20 °C or higher. [2] [3] The males care for the eggs and guard and fan them with their pectoral fins. [2] The males' behaviour becomes quite territorial and aggressive during breeding season. They have been known to chase the other fish around.[ citation needed ]


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References

  1. Whiterod, N., Hammer, M. & Unmack, P. (2019). "Mogurnda clivicola ". IUCN Red List of Threatened Species . 2019: e.T122913831A123382376. doi: 10.2305/IUCN.UK.2019-3.RLTS.T122913831A123382376.en . Retrieved 30 August 2022.{{cite journal}}: CS1 maint: multiple names: authors list (link)
  2. 1 2 3 4 5 6 7 8 9 "Mogurnda clivicola Allen & Jenkins 1999 Flinders Ranges, Barcoo, or Bulloo mogurnda". Desert Fishes Council Australia. Retrieved 17 September 2009.
  3. 1 2 3 4 5 Allen, G.R.; Midgley, S.H.; Allen, M. (2002). Freshwater Fishes of Australia. Perth: Western Australian Museum. p. 306. ISBN   0-7307-5486-3.
  4. Froese, Rainer; Pauly, Daniel (eds.) (2006). "Mogurnda clivicola" in FishBase . November 2006 version.

Further reading