Linear Blenny Care Guide
Ecsenius lineatus · Saltwater Blenny
What Linear Blenny look like
The Linear Blenny (Ecsenius lineatus) exhibits a slender, elongated body that can reach a maximum adult size of approximately 3 inches (7.5 cm). Its coloration is predominantly a striking blue with distinct yellow horizontal stripes that run along the length of its body, providing excellent camouflage among the reef substrate. Sexual dimorphism is subtle, with males typically displaying slightly more vibrant coloration and larger dorsal fins than females. This species possesses a fused pelvic fin that forms a disc-like sucker, allowing it to adhere to rocky surfaces. Additionally, the Linear Blenny features a well-developed lateral line system that aids in detecting water movements, and its dentition consists of small, sharp teeth adapted for grazing on algae.
Behavior & temperament
The Linear Blenny is a primarily solitary fish that exhibits territorial behavior, often establishing a home range within crevices and rock formations. It is typically found at mid to lower reef levels, where it can be observed darting in and out of hiding spots. Breeding behavior involves males performing courtship displays that include fin flaring and body posturing to attract females. The species is generally peaceful but can exhibit aggression towards conspecifics, particularly males during breeding season. Its feeding behavior is characterized by grazing on filamentous algae and biofilm, and it is known to be a diurnal forager, actively searching for food during daylight hours.
Diet & feeding
The Linear Blenny is primarily herbivorous, feeding on filamentous algae and microalgae in its natural habitat. In captivity, it requires a diet rich in algae, supplemented with high-quality herbivore pellets and frozen foods such as spirulina and marine vegetable sheets.
Behind the name
The scientific name 'Ecsenius lineatus' derives from the Greek word 'Ecsenius', which is a genus name for blennies, and 'lineatus', meaning 'lined' in Latin, referring to the characteristic stripes on its body.
Plan your tank
Check the numbers before you buy: tank volume, salinity, salt mix, water changes, and your ongoing care routine.
Keeping Linear Blenny?
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