Blue Spotted Mudskipper (Periophthalmus waltoni) - Live Fish

Common Name: Blue Spotted Mudskipper
Scientific Name: Periophthalmus waltoni

A fascinating amphibious oddball, the Blue Spotted Mudskipper is part fish, part land explorer! Known for its perky eyes, spotted body, and comical behavior, this brackish water species spends as much time out of the water as in it — hopping, perching, and even "walking" with its pectoral fins!

📍 Origin:

Coastal mudflats and mangroves of Iran, Iraq, and the Persian Gulf region

📏 Size:

Up to 5 inches (12–13 cm) in length

😎 Temperament:

Semi-aggressive and territorial, especially toward their own kind. Best housed alone or in very large enclosures with visual barriers if kept in groups.

💧 Water Parameters:

• Temperature: 75–82°F (24–28°C)

• pH: 7.5–8.5

• Salinity: Brackish (SG 1.005–1.015)

• Tank Size: Minimum 30 gallons with both land and water zones

🌿 Care & Environment:

The Blue Spotted Mudskipper requires a paludarium-style setup with:

• Shallow, brackish water

• Dry, land areas (mud banks, driftwood, rocks)

• A tight-fitting lid — they're jumpers and climbers!

• Warmth and high humidity

• Low-flow filtration and frequent water changes

Care Level: Advanced/Experienced Aquarist
Lifespan: 5+ years with proper care

🍽️ Diet:

Carnivorous.
Feed a variety of meaty foods including:

• Live or frozen bloodworms, brine shrimp, mysis shrimp, and chopped seafood

• Will sometimes accept carnivore pellets (soaked) or gel diets

• Feeding should be done on land or at the water's surface

🤝 Compatibility:

• Best kept solo or with caution: Very territorial with other mudskippers

• Tank mates: Brackish-tolerant, surface-avoiding species like mollies or knight gobies in very large setups

• Do NOT keep with: Small, slow, or docile fish that can’t tolerate brackish conditions or might get bullied

🎉 Fun Facts:

• Blue Spotted Mudskippers breathe through their skin and mouth lining, allowing them to spend long periods out of water — just like amphibians!

• They can “walk” and hop using strong pectoral fins — often climbing rocks and decorations in the tank.

• Males perform elaborate displays using their raised dorsal fin during courtship or to ward off rivals.

🛒 Looking for something totally unique?
The Blue Spotted Mudskipper is part fish, part land creature, and 100% conversation starter. Perfect for advanced aquarists ready to take on a brackish, semi-aquatic challenge.
Available now at Stillwater Aquaria — while supplies last!