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RIVULUS COMPLEX

 

ANABLEPSOIDES CAJARIENSIS  COSTA & DELUCA 2010

Genus: ANABLEPSOIDES     Group:     Family: Rivulidae      Class: Actinopterygii     Phylum: Chordate    Order: Cyprinodontiformes

 

AQUARIST INFORMATION

Rivulus cajariensis – Photo by W. Costa and obtained from the original description.

Type locality:  near the village of Cajari, northern Brazil.

The distribution appears limited to the upper Cajari River which merges with the Amazonas River.  It was found in a very shallow channels and pools.

It is related to Rivulus igneus from Suriname and French Guiana.

This species has never been kept in captivity.  Breeding & maintenance notes are based on general Rivulus behavior.

Males attempt to establish dominance over each other.  It is considered a relatively easy species to propagate using floating and top mops.   Eggs should be picked and placed in a small hatching container.  Incubation runs about 14 days.  Fry are large enough to accept newly hatched brine shrimp.  It is reported that low pH results in a higher preponderance of males.

TAXONOMIC DATAMax. size 5.7 cm.     Dorsal 10-11,     Anal16-17,     D/A 0.0,     LL scale count (average) 39      Pre- dorsal length to % SL –78.4 %     Depth to % SL – 19.4 %
LITERATURE & REFERENCES:

Costa W.J.E.M., A. C. De Luca, 2010. Rivulus cajariensis, a new killifish from the Guiana Shield of Brazil, eastern Amazon (Cyprinodontiformes: Rivulidae) Ichthyol. Explor. Freshwaters, Vol. 21, No. 4, pp. 353-358, 1 fig.

 

LINKS:

https://www.itrainsfishes.net/content/

 

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