Goby Cichlid (Eretmodus cyanostictus) is an intermediate-level freshwater fish that needs at least 30 gallons and 75-82°F. A small Tanganyikan cichlid that perches on rocks and grazes algae, shaped much like a goby. It needs hard, alkaline water, rocky structure and good flow.

Care facts at a glance

Scientific nameEretmodus cyanostictus
FamilyCichlidae
OriginLake Tanganyika, Africa
Adult size3-4 in
Minimum tank30 gallons
Temperature75-82°F
pH7.8-9.0
TemperamentTerritorial toward its own kind
Social behaviorPairs or groups in a larger tank
Swim levelBottom, rocks
DifficultyIntermediate
DietOmnivore: algae-based foods, small frozen foods, small pellets
Typical lifespan6-8 years

Quick tips

  • Use rockwork with plenty of surfaces to graze.
  • Keep water hard, alkaline and well oxygenated.
  • Do not mix with soft-water fish.

San Diego water

Naturally suited to San Diego's hard, alkaline tap water once it is dechlorinated (the city uses chloramine, so use a conditioner that handles it). Learn the numbers in our San Diego tap water guide.

Before you buy

Make sure your tank is cycled (how to cycle a tank), check your numbers with the water testing guide, and use the compatibility guide to check tankmates. These are general ranges; individual fish and local water vary.

Find it at Pet Zone

Pet Zone Tropical Fish is a San Diego aquarium store with two locations. Stock changes daily, so call ahead if you are after a specific species or plant. Shop online at petzonesd.com.

Pet Zone Convoy

4160 Convoy St, San Diego, CA 92111
(858) 987-0309
Open daily, 10am-6pm

Aquascaping, planted tanks

Pet Zone Mid-City

4266 University Ave, San Diego, CA 92105
(619) 283-1812
Closed Monday; Tue-Fri 10:30am-6pm, Sat 11am-6pm, Sun 11am-4pm

Monster fish, koi