Fire-eye goby

Where they come from

Fire-eye gobies (Yoga pyrops) are Indo-Pacific fish you tend to see on outer reef slopes and rubble patches. Think open sand-to-rock edges where they can hover a bit off the bottom and bolt back to a crack in a heartbeat. They are often collected deeper than your average reef fish, which is part of why they can be touchy in home tanks.

Setting up their tank

Give them room to dash and plenty of hideouts. A single can go in a 30 gallon, but they really appreciate length and broken sightlines. Build a rockscape with lots of caves, narrow crevices, and shaded overhangs so they always have a bolt-hole in reach.

• Tight lid or screen (1/4 inch or smaller). They jump like darts.
• Moderate, steady flow with some calm pockets near their retreats.
• Lighting on the softer side at first. If your tank is bright, give shaded areas.
• Fine sand or small rubble around cave mouths so they feel secure.
• Stable reef parameters: 75-79 F, 1.024-1.026 salinity, pH 8.0-8.4, low nutrients but not sterile.

They settle better if they are not competing with rowdy fish on day one. Add them early in the stocking order or use a social acclimation box for a week so they learn the feeding routine without being chased.

What to feed them

They go for small, meaty foods drifting in the water column. Many arrive skinny and picky, so start with things they cannot resist, then work your way to easier options.

• Live foods to kickstart: live blackworms (rinsed), live baby brine, live copepods.
• Frozen: enriched baby brine, calanus, cyclops, finely chopped mysis, finely chopped krill.
• Dry (once settled): tiny high-quality marine pellets or crumble, offered mid-water.

I like to target-feed near their hide with a pipette. Soaking frozen foods in vitamins/HUFA (like Selcon) helps them put weight back on. Avoid relying on plain brine shrimp long-term; it is not very nutritious unless enriched.

How they behave and who they get along with

Expect a shy fish at first. They hover a bit off the bottom, then zip back to a crevice if anything looks off. Once they know the routine, they spend more time out and will even take food from the water column a few inches from you.

• Good tankmates: small peaceful wrasses (the gentler species), chromis, assessors, cardinalfish, clownfish with manners, small gobies and blennies that are not too pushy.
• Use caution with: dottybacks, larger hawkfish, boisterous wrasses, damsels, and anything that patrols mid-water aggressively.
• With their own kind: often safest as a single unless you obtain a known pair. Unmatched individuals can bicker hard in smaller tanks.

Breeding tips

Home breeding for this species is rare. Like many gobies and dartfish, they are believed to spawn in a secure cavity with adhesive eggs, and the early larval stage is tiny and pelagic. If you ever see courtship, give them very quiet conditions, a snug cave, and dusk lighting. Raising the larvae would require greenwater, copepod cultures, and careful light/flow management. It is a project for dedicated breeders with plankton-rearing setups.

Common problems to watch for

• Jumping: biggest cause of loss. Any sudden movement or lights flipping on can launch them.
• Feeding strike: new imports may only take live foods. Keep offerings small and moving; slowly mix in frozen once they are taking live.
• Light shock: deep-collected fish can hide constantly under bright LEDs. Use acclimation mode and provide shade.
• Bullying: even a single aggressive tankmate can keep them pinned in a cave. If you do not see them eating daily, reassess tankmates.
• Parasites: watch for flukes and ich/velvet. Look for flashing, clamped fins, excess hiding, or rapid breathing.