Amblygobius
Amblygobius is a genus of gobies that are found in the Indo-Pacific region. They are commonly known as “Amblygobius gobies” or “cardinal gobies”. These small, colorful fish are popular additions to saltwater aquariums due to their vibrant colors and peaceful nature.
Characteristics
Amblygobius species share several common characteristics. They typically have elongated bodies, with a compressed, almost triangular profile. They can grow to be up to 15 cm in length. The defining feature of these gobies is their prominent, pointed snout. Many species also have a distinctive, "cardinal-like" coloration, with stripes or bands of bright orange, red, or yellow against a background of black or brown. They have large, bulging eyes, a small mouth with tiny teeth, and a single dorsal fin that is continuous and often has a slightly pointed tip.
Environments
Amblygobius species prefer shallow, coastal waters, primarily in coral reefs, lagoons, and seagrass beds. They are often found in areas with sandy bottoms and abundant algae growth. They are typically found at depths of less than 20 meters. These gobies are active during the day and are often seen darting among the coral or seagrass, feeding on algae, plankton, and small invertebrates.
Diet
Amblygobius gobies are primarily herbivorous, feeding mainly on algae, both benthic and planktonic. They may also supplement their diet with small invertebrates, such as crustaceans and worms.
Behavior
These gobies are typically non-aggressive and can be kept in community aquariums. They are often seen in pairs, with the male guarding a territory and attracting a female. They are territorial and defend their feeding grounds from rivals. The males may also display courtship behaviors by fanning their fins and performing elaborate dances.
Reproduction
Amblygobius gobies are protandrous hermaphrodites, meaning they start as males and can transition to females later in life. They typically lay their eggs in a nest in a crevice or under a coral. The males guard the nest and care for the eggs until they hatch.
Species
The genus Amblygobius includes over a dozen recognized species, some of the most popular include:
- Amblygobius phalaena (Yellow Watchman Goby)
- Amblygobius rainfordi (Rainford's Goby)
- Amblygobius albimaculatus (White-Spotted Goby)
- Amblygobius decussatus (Red-Striped Cardinal Goby)
- Amblygobius bynoensis (Bynoe's Goby)
- Amblygobius hectori (Hector's Goby)
References
* [FishBase: Amblygobius](https://www.fishbase.se/summary/Amblygobius.html)* [WoRMS: Amblygobius](https://www.marinespecies.org/aphia.php?p=taxdetails&id=126816)