Keeping Stiphodon percnopterygionus, commonly known as the blue neon goby or Japanese blue goby, in an aquarium can be highly rewarding due to their striking coloration and unique behavior. Here are guidelines for their care:
Tank Setup
-
Tank Size: A 20-gallon (75-liter) tank or larger is recommended, especially if you plan to keep a group.
-
Substrate: Use fine sand or smooth gravel as these gobies are benthic and often sift through the substrate.
-
Water Flow: Stiphodon species thrive in strong water currents. Use a powerhead or strong filter to replicate their natural habitat in fast-flowing streams.
-
Aquascaping:
- Add smooth rocks and pebbles, as they enjoy grazing on biofilm.
- Include driftwood and live plants to create hiding spots and natural decor.
Water Parameters
-
Temperature: 72–79°F (22–26°C)
-
pH: 6.5–7.5 (neutral to slightly alkaline)
-
Hardness: Soft to moderately hard water (5–12 dGH)
-
Filtration: A high-quality filter is essential for clean, oxygen-rich water. Regular water changes (30% weekly) are crucial.
Diet
- Primarily algae eaters, but they may also consume microorganisms in biofilm.
- Supplement with:
- Spirulina tablets
- Algae wafers
- Blanched vegetables (e.g., zucchini, spinach)
- Occasionally offer small live or frozen foods like daphnia or cyclops. Avoid protein-heavy diets as it can harm their health.
Behavior and Tankmates
-
Social Behavior: Stiphodon percnopterygionus are peaceful and do best in groups of 4–6. Males can be territorial but typically without harm.
-
Tankmates:
- Ideal: Small, non-aggressive fish (e.g., danios, tetras, or rasboras).
- Avoid: Large or aggressive species.
-
Compatibility: They coexist well with shrimp and snails.
Breeding
Breeding is challenging in captivity.
- Males develop vibrant colors during courtship.
- Females lay eggs in crevices, and males guard them.
- Larvae require brackish water for development, a condition hard to replicate in typical aquariums.
General Notes
- These gobies are primarily wild-caught, so ensure they come from reputable sources to avoid overharvesting and stress-related health issues.
- Allow algae to grow naturally on rocks for grazing.
