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Pseudochromis alticaudex

A marine fish species of the family Pseudochromidae, valued by aquarists for its interesting behavior and beautiful coloration.

Family
Pseudochromidae
Origin
Oceano Pacifico occidentale, noto in Indonesia, Papua Nuova Guinea e isole Salomone.
Origin
Tropical oceans and reefsAfrica and MadagascarSouth and Southeast AsiaAustralia, New Guinea, and Oceania
Tank use
Used in 0 tanks

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Species challenges
Water Temperature

23 °C - 28 °C

pH Value

8.1 - 8.4

Water type

Marine

Tank level

Bottom

Adult size

5.5 cm

Species description

Geographical Origin and Habitat: Western Pacific Ocean, known from Indonesia, Papua New Guinea, and the Solomon Islands. Typically found in shallow waters and reef areas rich in hiding places.

Taxonomy and Morphology: Belongs to the family Pseudochromidae. Characterized by a body structure adapted to its active lifestyle, showing bright coloration. Size up to 5.5 cm.

Social Behavior: Active species with a aggressive temperament. Shows moderate to high territorial habits depending on sex and population density.

Coloration and Sexual Dimorphism: Males and females display visible differences in color pattern and vibrancy, especially during the courtship phase.

Care, breeding and tankmates

Aquarium Setup: Requires a marine tank of at least 21 gallons (approx. 80.0 liters), decorated with live rocks to provide natural shelter. For sand-dwelling wrasses, a fine sand bed of at least 2-3 inches (5-8 cm) is essential.

Diet and Feeding: Carnivorous. Feeds on small crustaceans, zooplankton, and frozen foods. It is recommended to feed the fish two or three times daily in small portions.

Water Quality: Stable parameters: temperature 23.0-28.0°C, pH 8.1-8.4, SG stable between 1.020 and 1.025. Monitored nitrates and phosphates.

Compatibility and Cohabitation: Compatible with reef fish. Avoid housing with larger predators or highly aggressive tankmates.

Aquarium Breeding: Spawns a ball of eggs. The male guards the fertilized egg mass. Not commonly reproduced in captivity.

Risks and Diseases: Sensitive to transport stress and high jump risk; requires a tightly fitted aquarium lid.

Fish profile

Temperament
Aggressive
Diet
Carnivorous. Feeds on small crustaceans, zooplankton, and frozen foods.
Tank level
Bottom
Minimum group
1
Adult size
5.5 cm
Minimum tank volume
80 L
GH
n/a
KH
n/a
TDS
n/a
Conductivity
n/a
Sex ratio
Singolo
Feeding frequency
Giornaliera
Bioload
Low
Flow
Medium
Jump risk
Covered tank required
Reproduction
Incubatore orale/nido. Il maschio custodisce la massa di uova fecondate. Non riprodotto comunemente in acquario.
Compatibility & tankmates
Molto territoriale. Attacca specie pacifiche o simili introdotte nella sua area d'azione.

Ecological Estimates & Biological Models

Trophic level
3.3 ± 0.5 se
Phylogenetic uniqueness (PD50)
0.5
Bayesian Length-Weight
a = 0.00501, b = 3.1
VulnerabilityLow vulnerability (10 / 100)

Image gallery

Licensed images linked to the species or, when marked, to the closest representative taxon.

Related species

Other recommended species with similar care requirements and water parameters.

Last updated: 06/13/2026