Blue / Green Gudgeon Bali

About this fish

Blue / Green Gudgeon Bali is a marine dartfish sold under the name Ptereleotris heteroptera. In an aquarium, it’s valued for its active, “darting” behavior and its tendency to live around the bottom where it can perch, forage, and retreat into rockwork or burrow-friendly areas. This fish is a good choice for reef tanks that need a generally peaceful, sand- and crevice-associated swimmer.

Features:

• Scientific name: Ptereleotris heteroptera (dartfish)
• Generally peaceful temperament with other non-aggressive tankmates
• Best kept with a sand bed and plenty of places to hide (rock crevices, rubble, or similar cover)
• Sits/feeds near the bottom and often darts in short bursts
• Often responds well to a varied diet of appropriately sized meaty foods
• Provide a secure lid, as small marine fish can be escape-prone
• Helpful for aquariums that already maintain stable saltwater parameters

Specifications:

• Care level: Moderate
• Temperament: Peaceful (generally does best with non-aggressive tankmates)
• Temperature: About 72–78°F (22–26°C)
• Salinity: About 1.020–1.025 SG
• pH: About 8.1–8.4
• Diet: Meaty foods such as small frozen/live offerings (e.g., mysis, brine, small worms) and appropriately sized prepared foods
• Adult size (approx.): Up to ~5 in (about 12 cm)
• Placement: Bottom/mid-lower tank area near sand and rockwork; provide hiding cover
• Jump risk: Cover/lid recommended to help prevent escapes