This species was originally described as Cynolebias notatus.

Costa split the genus Cynolebias in Cynolebias, Megalebias and Simpsonichthys.

W. Costa (2006) assigned many members of the genus Simpsonichthys to the subgenus Hypsolebias (Costa 2006). Hypsolebias was subsequently elevated to a genus (Costa 2011). According to some scientists, the separation of Hypsolebias from the genus Simpsonichthys is insufficiently substantiated and, therefore, debatable.

Discoverer(s): 

Marco TC Lacerda, Gilberto Campello Brasil and Dalton TB Nielsen, March 4. 1989.

Etymology: 

marked (from Latin: notatus), in reference to the dark blotch on mid-anterior sides of male.

Superspecies-components: 

H. auratus, gibberatus, nielseni, notatus, radiosus, rufus, similis, stellatus, trilineatus, virgulatus.

Diagnosis: dark vertical bars on sides and a black blotch on body center of male, plus pale blue-green dots on each scale of head, sides, on Dorsal and upper Caudal; dark bars, extended into Anal, not Dorsal (with a pale blue margin; also Caudal, as a border); Caudal fin with blue dots and with blue upper margin in male; blue dots over entire sides in male; tip of Pectoral fin reaching between base of 5th and 7th Anal fin rays in male (Costa, Lacerda & Brasil, 1990; Costa & Brasil, 2004).

This species can be productive, and the fry is small. Immediately after hatching, the fry should be fed with freshly hatched Artemia nauplii (brine shrimp) or better Paramecium. As most annual species do, they spawn by diving entirely into the substrate. It is best to provide a container with a lid on top in which a hole is made to allow the fish access. That container will need to have enough peat in it for the fish to dive completely into it. For most Hypsolebias species, egg development is complete after 8-10 weeks. However, it is wise also to check a few weeks earlier to see if any eggs have fully developed. Do not let the peat dry too far because the Hypsolebias like it moist. The development will be slower at storage temperatures between 21 and 24 Celsius and speed up at 25-29 Celsius. Before watering the eggs, put

some eggs in the water of about 18-20 degrees Celsius to see if the eggs hatch correctly. That usually happens within 2-6 hours. Then, if eggs hatched well and fry, swim correctly, bring all remaining peat in the water. You may need to re-pack the peat after pouring over the first group of fry to a larger tank. With regular water changes and sufficient food, the young will grow quickly, and after about 5-6 weeks, they can already produce their first eggs. Since this genus has an annual life cycle, the expected life span in captivity is not much more than 10 to 12 months. Their life expectancy is limited to when their pool still has water in the wild. This period can vary from 6 to 8 months.

Remarks:

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Max. size 3.5 cm.
Dorsal 23.0,
Anal 20.1,
D/A 2.0,
LL scale count (average)26.0