Scientific Name
Hypsophrys nematopus

Common Name
Poor man's tropheus

Biology
Dorsal spines (total): 18 - 19; Dorsal soft rays (total): 9-10; Anal spines: 7 - 8; Anal soft rays: 6 - 7. This species is distinguished by the following set of characters: teeth properly incisor, even in young; caudal edge of mesethmoid with a unique shape; caudal edge of supraoccipital crest straight, inclined rostrad, its height 27% of postethmoid skull length; width of posterior premaxillary expansion greater than 41% of length of the same bone; arms of articular equal in length; gut S-folded ventrorostrally in adults, anal and medial loops nearly touching; with an abrupt, steep head profile (Ref. 74403).

Classification

Classified By

G?nther, 1867

Class

Ray-finned fishes (Actinopterygii)

Order

Perch-like fish (Perciformes)

Family

Cichlids (Cichlidae)

Distribution

Region

Central America

Distribution

Central America: Atlantic slope of Nicaragua and western Costa Rica, in the San Juan River drainage, including Lake Nicaragua and Lake Managua.

Range

Unknown

Environment

Climate

Tropical

Water Temperature From

21 °C

Water Temperature To

34 °C

Depth From - meters

Unknown m

Depth To - meters

Unknown m

Zone

demersal

Environment

Freshwater; ; pH range: 7.0 - 8.0; dH range: 9 - 20 demersal

Trophic Level

2 s.e. 0.00 Based on food items.

Occurs in Marine / Salt water

False

Occurs in Brackish water

False

Occurs in Fresh Water

True

Occurs on Reefs

False

Is kept in Aquariums

False

Physical Size and Genetics

Maximum Length

14.0 cm

Common Length

Unknown cm

Phylogenetic Diversity Index

PD50 = 0.7500 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Human Uses and Population

Human Uses

Unknown

Vulnerability

Low vulnerability (20 of 100)

Resilience

Low, minimum population doubling time 4.5 - 14 years (Fec=50-60)

Threat To Humans

Harmless

IUCN Red List Status

Not Evaluated