Common name: Red-mouthed goby
General information
The Red-mouthed goby, scientifically known as Gobius cruentatus, is a small, colorful fish that can add a touch of personality to any saltwater aquarium. They are known for their distinctive red mouth and a body that exhibits a mix of brown, white, and red patterns. These gobies are relatively peaceful and can be a good choice for a community tank.
Details
- Recommended minimum volume
- 100 liter (26 gallons)
- Salinity
- S.G. 1.020 to 1.025
- Temperature
- 22 to 25 °C (72 to 77 °F)
- Acidity
- pH 8.1 to 8.4
- Average size
- 15 cm (6″)
- Care level
- Moderate to easy Prefers live rock with hiding spots
- Diet
- Omnivore Varied diet with meaty foods
- Social
- Pair Pairs or small groups preferable
- Reefsafe
- Yes
- Aggression
- Peaceful
- Captive bred
- No
Taxonomy
- KingdomAnimalsAnimalia
- PhylumChordatesChordata
- ClassRay-finned FishesActinopterygii
- OrderPerch-like FishesPerciformes
- FamilyGobyGobiidae
- GenusGobyGobius
- SpeciesRed-mouthed gobyGobius cruentatus Gmelin, 1789
- SynonymsGobius rubens Rafinesque, 1810
Care
Red-mouthed gobies are hardy fish that adapt well to life in captivity. They prefer a tank with plenty of live rock and a sandy substrate where they can sift for food and establish territories. These gobies are omnivores and will accept a variety of foods including frozen and live brine shrimp, mysis shrimp, and quality flake or pellet foods.
Reproduction
In the wild, Red-mouthed gobies are known to spawn in the spring and summer. In the aquarium, breeding can occur if a pair is established. The male guards the eggs, which are typically laid in a sheltered spot or crevice.
Symbiosis
While not known for any specific symbiotic relationships like those seen in clownfish and anemones, Red-mouthed gobies do contribute to the tank's ecosystem by sifting through the substrate, which helps to aerate the sand and prevent dead spots.
Habitat
Gobius cruentatus is native to the Eastern Atlantic, from the Bay of Biscay to the coasts of Morocco, including the Mediterranean and Black Sea. They are typically found in shallow, rocky coastal areas and seagrass beds.