Alternative name Rivulus (Oditichthys) hoetmeri.

Rivulus hoetmeri, new species, is described from middle rio Acre, a tributary of the rio Purus, Amazon drainage, Brazil. It is the first species of Rivulus described from that basin and the second species belonging to the Rivulus limoncochae species group described from Brazil. The remaining species belonging to the R.limoncochae group are mainly found in Peru, but also occur in Colombia and Ecuador. Rivulus hoetmeri n. sp. differs other members of the R.limoncochae group by having two longitudinal rows of 18-20 minute contact organs per row on the sides of the body, and by the coloration patterns of both males and females.

Entomology: This species is named in honor of the Dutch aquarist and explored Jan-Willem Hoetmer who was co-discoverer of the new species.

Keeping and breeding is easy 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 aggressive 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 aeration. 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 variety 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 acriflavine to prevent 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. Often the number of males is far above the number of females. For some species this can become a major problem for the breeder as he has to raise many young fishes and so become able to distribute a few pairs to other hobbyists. Recent personal tests learned that lower pH levels during the time of hatching gave a higher percentage of females. To achieve this I use some peat moss that I add to the container with the eggs just before they are ready to hatch. This peat moss also is a good way to prevent eggs to become attacked by funguses.

There lifespan can be up to 3 years in captivity.

Remarks :

Max. size 0.0 cm.
Dorsal 0,
Anal 0,
LL scale count 0
Pre- dorsal length to % SL – 0%
Depth to % SL – 0 %

Nielsen, D. T. B. , Arsênio Caldeira Baptista Junior and Leendert van de Berg 2016. Anablepsoides hoetmeri, a new rivulid (Cyprinodontiformes: Rivulidae) from Rio Purus drainage, western Amazon basin, Brazil, pp. 69-78