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Orange-Lined Triggerfish (Balistapus undulatus)

Find Orange-Lined Triggerfish across reef-livestock retailers and from fellow hobbyists on ReefDock. Compare sources, check live pricing where available, and review source-tank parameters on Reef-Trak-verified fish listings before you buy.

Orange-Lined Triggerfish
Photo: Diego Delso · CC BY-SA 4.0
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Where to buy Orange-Lined Triggerfish

ReefDock searches the following reef retailers for this fish. Click through to see the live price.

  • Saltwaterfish

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    Search Saltwaterfish
  • Amazon

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    Search Amazon
  • Petco

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    Search Petco

About Orange-Lined Triggerfish

The Orange-Lined Triggerfish has a robust, compressed body with a distinctive pattern of orange-red curved lines and stripes running across its head and body on a background of olive-green to brown coloring. It possesses a large, powerful mouth and characteristic trigger-like dorsal fin spines. The eyes are small and positioned high on the head, and the pectoral fins are rounded.

Key facts

Aka
Orangestripe Triggerfish, Orange-Lined Triggerfish
Max Size
12
Feeding Schedule
1-2 times daily
Care Requirements
• Minimum 180 gallon tank • Temperature range 72–78 °F • pH range 8.1–8.3 • Salinity range 1.020–1.025 SG • Provide strong water flow and efficient filtration; triggerfish are messy eaters and produce abundant waste • Feed 1–2 times daily and observe for overeating; this species has a strong appetite but should not be overfed
Diet
carnivore
Water Parameters
Temperature: 72-78°F pH: 8.1-8.3 Salinity: 1.02-1.025
Family
Balistidae
Care Level
Hard
Difficulty Level
The Orange-Lined Triggerfish demands a large aquarium, strong filtration, and careful feeding management. Its aggressive temperament, destructive behavior toward tankmates and décor, and tendency to bite and harass other fish make it suitable only for experienced aquarists maintaining a species or predator-focused system.
Min tank size
180 gallons
Temperament
Aggressive
Diet Details
Offer a varied carnivorous diet including meaty foods such as frozen-thawed krill, mysis shrimp, squid, and chopped clams. Triggerfish are opportunistic feeders that will also consume small crustaceans and mollusks; feed whole snails in shell to help wear down their continuously growing teeth.

Looking for a hobbyist seller?

ReefDock's marketplace lets reef-keepers sell fish directly to other reef-keepers with Stripe-secured checkout and live-arrival photo confirmation. Browse current fish listings on ReefDock, or list your own.

Verify the source tank before you buy

ReefDock is the sister app to Reef Trak. Sellers who maintain a Reef Trak tank log can publish source-tank parameters on eligible fish listings — so you can see the conditions a fish was raised in before you buy. Log this fish on Reef Trak.

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