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Yellow-lip Dottyback

Pseudochromis aurulentus

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

Family
Pseudochromidae
Origin
Oceano Pacifico sud-occidentale, Grande Barriera Corallina e isole del Mar dei Coralli.
Origin
Tropical oceans and reefsExtra-Amazon South America
Tank use
Used in 0 tanks

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Species challenges
Water Temperature

22 °C - 26 °C

pH Value

8.1 - 8.4

Water type

Marine

Tank level

Bottom

Adult size

6.5 cm

Species description

Geographical Origin and Habitat: Southwest Pacific Ocean, Great Barrier Reef and Coral Sea 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 6.5 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 brine shrimp, mysis, copepods, and small worms. It is recommended to feed the fish two or three times daily in small portions.

Water Quality: Stable parameters: temperature 22.0-26.0°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: Oviparous reproduction. The male is responsible for defending the egg nest until hatching. Rare in aquariums.

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 brine shrimp, mysis, copepods, and small worms.
Tank level
Bottom
Minimum group
1
Adult size
6.5 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
Riproduzione ovipara. Il maschio si occupa di difendere il nido di uova fino alla schiusa. Riproduzione in acquario rara.
Compatibility & tankmates
Estremamente territoriale verso pesci di forma o taglia simile. Reef-safe con coralli ma predatore di piccoli gamberi.

Ecological Estimates & Biological Models

Trophic level
3.4 ± 0.5 se
Resilience
High (less than 15 months)
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