Blue Jigsaw Triggerfish (Pseudobalistes fuscus)
The Blue Jigsaw Triggerfish, Pseudobalistes fuscus, is a powerful and striking Indo-Pacific triggerfish with a bold blue, green and grey body pattern that can appear like interlocking lines or jigsaw markings, especially in younger specimens. Also known as the Blue Triggerfish, Blue-lined Triggerfish, Rippled Triggerfish or Yellow-spotted Triggerfish, this species is hardy, intelligent and full of character. It is best suited to large fish-only marine aquariums, as it becomes robust, territorial and unsuitable for reef displays with corals or small ornamental invertebrates.
Common Names
Blue Jigsaw Triggerfish, Blue Jigsaw Trigger, Blue Triggerfish, Blue-lined Triggerfish, Blueline Triggerfish
Specifications
| Species | Pseudobalistes fuscus |
|---|---|
| Common Name | Blue Jigsaw Triggerfish |
| Habitat | Indo-Pacific |
| Behavior | Territorial, active, intelligent |
| Aquarium Suitability | Large fish-only tanks |
| Compatibility | Not suitable for reef tanks with corals or small invertebrates |
FAQ
What is the typical size of a Blue Jigsaw Triggerfish in an aquarium?
The exact size can vary, but Blue Jigsaw Triggerfish typically grow to around 12 to 15 inches in length in captivity, depending on tank conditions and age.
Is the Blue Jigsaw Triggerfish suitable for a reef tank?
No, this species is not suitable for reef tanks due to its territorial nature and tendency to damage corals and small invertebrates.
How long does it take for a Blue Jigsaw Triggerfish to reach its full adult size?
It can take 3 to 5 years to reach full adult size, depending on water quality, diet, and tank size.

Jason Baker –
This triggerfish is a bold and active addition to a large marine tank. The jigsaw pattern is very striking and changes as it matures. It’s not for beginners, but once you have the right setup, it’s a fascinating and lively presence.
Jasmine Russell –
I’ve had this fish for over a year now. It’s territorial and needs plenty of space. I keep it in a 120-gallon tank with no corals. It’s very intelligent and will explore the tank constantly.
Harry Murray –
The coloration is vibrant and the fish is very active. It’s not aggressive toward other fish, but it does defend its space. Perfect for a large fish-only system where it can thrive.
Maria Gibson –
It’s a beautiful fish, but it requires a very large tank. I didn’t realize how much space it needed at first. After setting up a bigger tank, it settled in well and became a regular part of the tank activity.