Assessor flavissimus, commonly known as the Yellow Basslet, is a captivating marine fish prized for its bright yellow body and peaceful nature. This species is a popular choice among marine aquarium enthusiasts seeking a visually appealing yet gentle addition to their reef or fish-only tanks.
Our DJM tank-bred Assessor flavissimus are available in various sizes, ensuring you can select the perfect specimen for your aquarium setup. Tank-bred individuals typically adapt well to captive conditions and display more robust health compared to wild-caught counterparts.
Care and Husbandry
Assessor flavissimus thrives in well-established marine aquariums with stable water parameters. A minimum tank size of 75 litres is recommended to provide sufficient swimming space and reduce territorial behaviour. They prefer moderate water flow and subdued lighting, mimicking their natural reef cave habitats.
These basslets are peaceful and compatible with other non-aggressive fish species. Avoid housing them with large or aggressive tank mates that may cause stress or injury.
Diet
In captivity, Assessor flavissimus accepts a varied diet including high-quality frozen or live foods such as brine shrimp, mysis shrimp, and finely chopped seafood. Supplementing with marine flake or pellet foods can help ensure balanced nutrition.
Reef Compatibility
This species is considered reef safe and can be kept in reef aquariums without posing a threat to corals or invertebrates.
Additional Information
- Temperament: Peaceful
- Reef Safe: Yes
- Minimum Tank Size: 75 litres
- Lighting Requirements: Moderate to low
- Water Flow: Moderate
- Placement: Mid to lower levels of the aquarium, near rockwork or caves
- Origin: Not Provided
- Maximum Size: Up to 6 cm (approx.)



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