Lawnmower blenny

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The lawnmower blenny, also known as the sailfin blenny or algae blenny, is a type of small saltwater fish that belongs to the family Blenniidae. Its scientific name is Salarias fasciatus. The name "lawnmower blenny" comes from its feeding behavior, as it grazes on algae and can help keep the growth of algae in check in aquariums.

Here are some key features and characteristics of the lawnmower blenny:

Appearance: The lawnmower blenny has a long, slender body with a rounded head and large eyes. It has a mottled brown or tan coloration with vertical stripes running along its body, which helps it blend in with its surroundings.

Size: It typically grows to a length of about 5 to 6 inches (12 to 15 centimeters) in the wild, although specimens in captivity may be slightly smaller.

Habitat: Lawnmower blennies are native to the Indo-Pacific region, including the Red Sea and the eastern coast of Africa. They inhabit coral reefs, rocky coastlines, and shallow lagoons, where they can find ample algae to feed on.

Algae Grazing: As the name suggests, the lawnmower blenny is an herbivorous fish that primarily feeds on various types of algae. It has specialized comb-like teeth in the front of its mouth, which it uses to scrape algae off rocks and other surfaces.

Behavior: These blennies are generally peaceful and can be kept in community aquariums, although they may exhibit territorial behavior towards other blennies or similar-looking fish. They are known for their entertaining and active swimming patterns.

Aquarium Care: If you want to keep a lawnmower blenny in your aquarium, it's important to provide a suitable environment. They require a tank with plenty of hiding spots, live rock, and a sandy substrate where they can burrow. The tank should also have good water movement and a well-established algae growth for them to graze on. It's essential to maintain proper water quality parameters and a balanced diet.

Compatibility: Lawnmower blennies are generally compatible with a variety of peaceful fish species. However, they may nip at small, slow-moving invertebrates like fan worms or ornamental shrimp. It's important to consider the tank mates and their specific requirements before introducing a lawnmower blenny to an aquarium.
  • Care level: Moderate
  • Temperament: Peaceful
  • Diet: Herbivore
  • Reef Compatible: Yes
  • Family: Blenniidae
  • Minimum Tank Size: 30 gallons 
  • Size: 2 inches

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