Prorivulus auriferus, Costa, Lima, Suzart in Costa, 2004

History

Prorivulus auriferus is monotypic. Till now only one species belongs to the genus which was erected the same time with this species.

The name auriferus refers to the display of golden spots at the lower lateral sides of the body. auri (Aurum= gold) and ferus (Fero = bearing).

The species was first discovered by A.O. LIma and Rogrio R. Suzart, 28 June 2003.

Holotype is a male (30.3 mm standard lenght) from Valenca in the state Bahia, Northern Brasil.

 
Prorivulus auriferus - male. Image by Lee van Hyfte, USA.

Reproduction

Keeping and breeding will be as easy as most Rivulus but a good cover of the aquarium is necessary because there ability to jump, even true the smallest opening, is unbelievable.

This species can, if there is enough space for them, housed in a tank with more males than one only and several females. If separated before and brought together again however, they can be very agressive to each other and fight to become dominant to others. The best way to have much offspring is to put a pair or an trio in a small tank from 10 liters with a small filter in it or with some airation. On the bottom some peat moss or dark gravel and a floating "mop" to give space for laying there eggs. The fish will, if they become a rich varity of life food, spawn during there whole adult life and produce daily between 5 to 15 eggs.

The eggs should be collected by hand and stored for about 14 days in a small container. Eggs are 1.6 mm and amber colored. It is wise, to add to the water you store the eggs in, some acryflavine to provent fungus coming up.

 

After hatching the young fry can eat fresh artemia nauplii without any problem. It takes 4 to 5 months to raise them to maturity.

There lifespan can be up to 3 years in captivity.

Remarks :

 


Variations
     

Map
     

Meristics

Max. size 4.0 cm.
Dorsal 9.5,
Anal 14.5,
D/A 8.5,
LL scale count (average) 32.5
Pre- dorsal length to % SL – 76.8 %
Depth to % SL – 20.0 %

   

Literature
Costa W.J.E.M 2004. A new Killifish Genus and Species from the coastal Plains of Northeastern Brsil (Teleostei: Cyprinodontiformes: Rivululidae). Zootaxa, 642: 3, fig 1-2. PDF