Skiffia multipunctata

Colouration: 

Skiffia multipunctata is very variable in colouration.Typically (but not in all populations) can be found several (up to many) spots on the sides and the unpaired fins, sometimes in rows. Some populations show in the male gender dusky brown blotches, others deep black and big blotches, being not symmetrical on both sides of the fish. Some blotches cover nearly the complete side of the fish. The ground-colour goes from silvery to yellowish-brown, being superimposed (in some popuations) with striking yellow and orange. The edge of the unpaired fins and the nape can be coloured dark-gray to grayish-blue in courtship. The females are mainly grayish-brown without blotches or striking colours.

Etymology: 

The species name is derived from the Latin and means "with many spots". It is therefore named after its spotted appearance of the types.

First Describer: 
(Pellegrin, 1901)
Mexican Name: 
Tiro pintado
Habitat: 

The habitats are small lakes, quiet river channels, spring-fed ponds and ditches over substrates of silt, mud, sand and rocks. Usually, the Splotched Splitfin prefers depths of less than 1m in clear to turbid water with currents none to moderate. The vegetation comprises green algae, Lemna, Typha and water hyacinths. In some habitats, there are plenty of roots from Taxodium, where this species is hiding and feeding from aufwuchs. 

 

Lago de Camécuaro ILago de Camécuaro II

 

Lago de Camécuaro IIILago de Camécuaro IV

 

Manantial La Luz IManantial La Luz II

 

Manantial La Luz IIIManantial La Luz IV

Distribution and ESU's: 

  This species lived originally in the ríos Lerma-Grande de Santiago basin (above El Salto de Juanacatlán) on the Pacific Slope, inlcuding the Lago de Chapala. Now it seems, it is restricted to the Río Duero system, a south eastern tributary to the lower Río Lerma, including several springs in the vicinity of Zamora de Hidalgo and Tangancicuaro de Arista. All known habitats are in the states of Jalisco and Michoacán.

 

  ESU ist short for Evolutionarily Significant Unit.  Each unit expresses an isolated population with different genetic characteristics within one species.  ESU's can be defined by Molecular genetics, Morphology and/or Zoogeography and help in indicating different phylogenetic lineages within a species.  The abbreviation for an ESU is composed of the first 3 letters of the genus, followed by the first 2 letters of the species name and an ongoing number in each species.

Karyotype: 

  The Karyotype describes the number and appearance of chromosomes during the phase of condensation, classified by the position of the centromere (Levan et al., 1964).

The following abbreviations are employed:

 

M = large metacentric chromsome (a result of Robertsonian fusion)

m = small metacentric chromsome (centromere at medium position)

sm = submetacentric chromsome (centromere at submedian position)

smst = submetacentric-subtelocentric chromosome (continous series)

st = subtelocentric chromosome (centromere at subterminal region)

stt = subtelocentric-acrocentric chromosome (continous series)

t = acrocentric chromosome (centromere at terminal region)

 

The Karyotype of Skiffia multipunctata, following Uyeno, Miller & Fitzsimons, 1983:

2n = 46    2M/ 2m/ 4st/  38t  

Status following other sources: 

Endangered; Comment: Some decline since 2000

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Remarks: 

Langhammer crossbred Skiffia multipunctata and francesae in 1988. The hybrids had been fertile over generations, beautifully coloured with big black blotches on the sides. They have been called "Black Beauties". If some of these hybrids still exist in the United States is told differently and uncertain therefore. Besides the product of Characodon audax and Characodon lateralis, this is the only hybrid among Goodeids without being forced to.  

 

All Skiffia-species are rare in nature and highly endangered. Skiffia multipunctata can currently be found at only 6 of historical 14 reported sites, all of them restricted to the Río Duero drainage. At least one extirpated population (from the Lago de Camécuaro) is still persisting in the hobby. 

Synonyms: 

Xenendum multipunctatum   Pellegrin, 1901

Goodea multipunctata   Regan, 1907

Ollentodon multipunctatus   Hubbs & Turner, 1937

Terra typica: 

The types come from lakes and ditches of the L`Agua Azul, vicinity of Guadalajara in Jalisco.

Size: 
The maximum known SL is 72mm (Miller et al, 2005).
Status after IUCN: 

not mentioned

Diet: 

Like in all Skiffia-species, the gut is about 2 to 3 times the length of the fish. The teeth are mainly bifid in both rows. Like its closest relative, Skiffia francesae, this species is grazing aufwuchs and algae, sometimes from roots of Taxodium.

English Name: 
Splotched Skiffia

Locations

Biology: 

Young have been captured from February to May, so the reproduction seems to be probably in spring. 

Holotype: 

  Collection-number: Collection du Muséum National d'historíre naturelle de Paris, Cat. No. CMP-97/371-373.

  The three types have total lengths of 62, 53 and 29mm, collected by M. L. Diguet, probably 1900.

Original Description: 

  PELLEGRIN, J. (1901): Poissons recueillis par M. L. Diguet dans lètat de Jalisco (Mexique). Bulletin du Muséum national d'histoire naturelle, no 7: pp 204 - 207