Description
The Yellow Dottyback (Pseudochromis fuscus) is a bold and resilient marine fish known for its intense yellow colouration and assertive personality. Commonly referred to as the Dusky Dottyback, this species is a hardy reef inhabitant that brings both colour and character to marine aquariums. Its compact size and alert behaviour make it an eye-catching addition, best suited to aquarists who understand semi-aggressive reef species.
Features of Yellow Dottyback (Pseudochromis fuscus)
• Native habitat: coral reefs and rocky reef slopes of the Indo-Pacific region
• Maximum size: approximately 8–10 cm in length
• Lifespan: 5–7 years in well-maintained marine aquariums
• Temperament: semi-aggressive to aggressive, highly territorial toward similar fish
• Colouration: solid bright yellow to yellow-orange body with darker facial shading
• Behaviour: bottom to mid-level dweller; frequently patrols rockwork and crevices
The Best Aquarium Size for Yellow Dottyback
A minimum aquarium size of 120 litres is recommended for a single Yellow Dottyback. Larger aquariums of 180 litres or more help reduce territorial aggression and allow for more suitable tank mate selection. Dense live rock structures are essential to provide hiding places and defined territories.
Tank Mate Compatibility for Yellow Dottyback
The Yellow Dottyback can be kept with robust, confident reef fish in suitably sized aquariums. Compatible tank mates include:
• Clownfish (Amphiprion species)
• Dwarf Angelfish (Centropyge species)
• Hawkfish
• Larger Gobies and Blennies
• Semi-aggressive Wrasses
Avoid housing with very small, passive fish or ornamental shrimp, as they may be harassed or preyed upon.
Diet for Yellow Dottyback
A carnivorous feeder, Pseudochromis fuscus thrives on a varied diet of meaty marine foods. Offer high-quality marine pellets, frozen mysis shrimp, brine shrimp, chopped prawns, and other seafood-based foods. Feeding once or twice daily in small amounts supports health and vibrant colouration.
Aquarium Setup for Yellow Dottyback
Aquarium Filtration
Strong, efficient filtration and protein skimming are important to maintain high water quality, as this species prefers clean, stable conditions.
Aquarium Plants
Live plants are not required. Live rock provides shelter, grazing opportunities, and biological filtration.
Aquarium Lighting
Standard reef lighting is suitable. Lighting should be tailored to coral requirements if present.
Aquarium Heating
Maintain stable tropical temperatures with a reliable heater and thermometer.
Aquarium Substrate
Fine sand or crushed coral substrate complements a natural reef setup and supports natural behaviour.
Aquarium Decorations
Arrange live rock to form caves, overhangs, and narrow crevices. These structures allow the Yellow Dottyback to establish territory and display its natural hunting and patrol behaviours.
