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Blue Dartfish (Ptereleotris microlepis)

Find Blue Dartfish 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.

Blue Dartfish
Photo: James Chudrie · CC BY 4.0
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Where to buy Blue Dartfish

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 Blue Dartfish

A slender, elongated fish with vibrant blue coloration on the head and body, contrasting with yellow-orange on the dorsal and caudal fins. The body is streamlined for quick, darting movements.

Key facts

Care Requirements
• Minimum 30-gallon tank; 40+ gallons preferred • Requires strong water flow and excellent water quality (0 ammonia/nitrite, <20ppm nitrate) • Sandy substrate for burrowing behavior; provide rockwork with caves for shelter • Peaceful fish; keep singly or in established pairs; avoid aggressive tankmates • Feed high-quality small pellets, mysis shrimp, and copepods daily
Difficulty Level
Beginner
Reef safety
Reef Safe
Feeding Schedule
2-3 times daily
Diet
carnivore
Min tank size
30 gallons
Water Parameters
Temperature: 72-82°F pH: 8.1-8.4 Salinity: 1.02-1.025
Appearance
A slender, elongated fish with vibrant blue coloration on the head and body, contrasting with yellow-orange on the dorsal and caudal fins. The body is streamlined for quick, darting movements.
Common Health Issues
Marine ich, Fin rot, Swim bladder disorder, Bacterial infections, Parasitic infestations
Aka
Pearly Dartfish, Smallscale Hover Goby
Care Level
Moderate
Family
Microdesmidae

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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