Description
Scientific Name: Periophthalmus gracilis
Common Name: Graceful Mudskipper
Adult Size: 2.5–3 inches (6–7.5 cm)
Life Expectancy: 5–8 years (can reach up to 10 years with optimal care)
Habitat: Native to slow-moving rivers, ponds, and marshes in South America—notably Argentina, Venezuela, and Colombia; prefers soft, silty bottoms with leaf litter and plant cover
Tank Requirements
Minimum Tank Size: 20 gallons (for a group of 5–6; always keep in groups)
Ideal Temperature: 72–78°F (22–26°C)
pH Range: 6.0–7.5
Water Hardness: 2–15 dGH
Temperament: Peaceful, social, and active bottom-dweller; thrives in groups of 5 or more; excellent community fish
Diet & Nutrition
Omnivorous: Yes
Accepts sinking pellets, wafers, and tablets designed for bottom feeders
Enjoys frozen or live foods like bloodworms, brine shrimp, and daphnia
Will scavenge leftover food but still requires regular, intentional feeding
Benefit from occasional vegetable matter like blanched zucchini or spinach
