Paracanthurus hepatus 5-8 cm Yellow Belly

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Paracanthurus hepatus Yellow Belly: the blue tang with a striking and unique appearance

The Paracanthurus hepatus yellow belly is a rare and sought-after variant of the famous blue tang. This form is distinguished by a bright yellow or golden belly, which beautifully contrasts with the species' electric blue body and typical yellow caudal fin. This feature makes the fish even more luminous and spectacular in a well-lit reef aquarium.

This variant of the Paracanthurus hepatus retains all the behavioral and physiological characteristics of the classic blue tang: oval and laterally compressed morphology, constant activity in open water, and the ability to graze algae on live rocks. It can reach up to 25 cm in adulthood, requiring a significant swimming space.

An active, friendly fish appreciated by aquarists

The yellow belly blue tang is a very active fish, quickly moving in the tank's middle and upper areas. It is not shy and easily approaches the caretaker during feedings. It is an excellent choice to visually animate a reef aquarium.

It is generally peaceful, though a bit nervous upon introduction. It can coexist with other peaceful marine species, provided the tank's volume is sufficient. An aquarium of over 500 liters is recommended to ensure ample swimming space and reduce interspecies stress.

An omnivorous diet with a herbivorous bent

Like all Paracanthurus, this yellow belly variant follows an omnivorous diet with a strong herbivorous tendency. It mainly feeds on microalgae, plant debris and, in captivity, should receive:

• Nori seaweed several times a week, attached to a floating or suctioned clip.
• Vegetable pellets and spirulina-based flakes.
• Occasional protein supplements like mysids, krill, or brine shrimp, especially during growth or acclimatization periods.

A well-balanced diet enhances its colors, supports its immune system, and curbs aggressive behavior related to hunger.

A structured environment and well-circulated water

The Paracanthurus hepatus yellow belly enjoys a well-structured environment with live rocks, natural hideouts, and long swimming areas. Water flow should be moderate to strong, with well-oxygenated and stable temperature water.

This fish, although extremely hardy once acclimated, can be sensitive to stress or skin diseases if water parameters change suddenly. It is therefore recommended to introduce it into a mature, well-stabilized tank.

An aesthetic and useful choice for large reef tanks

The yellow belly blue tang is a spectacular variant of the classic Paracanthurus. Its striking and unique appearance catches the eye and visually enhances any large reef aquarium. Its functional role as a grazer also makes it an excellent helper in controlling algae proliferation.

For aquarists looking for a colorful, active, and useful marine fish, the Paracanthurus hepatus yellow belly is a prestigious addition, provided it has a generous swimming space and a plant-rich diet.