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Salarias fasciatus — Lawnmower Blenny

Lawnmower Blenny

Salarias fasciatus

Lawnmower Blenny (Salarias fasciatus) is a marine species with an adult-size reference of about 14 cm. It needs at least 150 litres and one individual, with its social and territorial profile taken into account.

Température de l’eau

23 - 27 °C

Valeur du pH

8.1 - 8.4

Type d'eau

Marin

Niveau dans le bac

Fond

Taille adulte

14 cm

Volume minimal du bac

>= 150 L

Groupe minimal

>= 1

KH

8 - 12 dKH

Description de l'espèce

Geographical Origin and Habitat: A marine species; the enclosure should provide stability, oxygenation, space and shelter consistent with its behaviour without turning one habitat description into a mandatory recipe.
Taxonomy and Morphology: The accepted scientific name is Salarias fasciatus; the verified classification records genus Salarias, family Blenniidae, subfamily Salariinae, order Blenniiformes. Historical names remain searchable as synonyms rather than separate species.
Social Behavior: Lawnmower Blenny is normally kept as a single individual and does not require conspecifics. The minimum reference is one individual; sex, maturity and available space can require a more conservative composition. Observe access to food, resting behaviour, chasing and use of shelter. Isolation, persistent competition or aggression means the number, composition or environment needs to be corrected.
Coloration and Sexual Dimorphism: Colour and shape can vary with age, sex, physiological state and environmental conditions. Identification and sexing require recognized species-level characters; one appearance or photograph is not enough.

Soins, reproduction et cohabitation

Aquarium Setup: Lawnmower Blenny needs an aquarium of at least 150 litres, sized for adult body size and a minimum group of one individual. Filtration, shelter and swimming room must match the species and the actual number kept. Volume alone does not make an enclosure suitable: tank shape and length, usable area, oxygenation and the ability to separate territories must reflect adult behaviour.
Diet and Feeding: The recorded diet is herbivorous. Offer appropriately sized foods varied within that category, and adjust quantity and frequency from actual intake, body condition and leftovers. One food or a fixed schedule is not suitable for every age and situation.
Water Quality: Maintain stable, well-oxygenated water appropriate to a marine species; the card's reference values are 23–27 °C, pH 8.1–8.4. Verify conditions with reliable tests and size maintenance and filtration to the actual load. Ranges are not automatic thresholds for treatment or rapid chemical correction.
Compatibility and Cohabitation: The cohabitation profile is reef-safe with caution, with a generally territorial temperament. Keep at least one individual; tankmates, stocking density and decor must allow escape, rest and feeding without excessive competition. Watch interactions especially during feeding, maturity and breeding. Persistent chasing, injury or exclusion from food requires a change in stocking or layout, or separation of the animals.
Aquarium Breeding: The recorded reproductive profile is “oviparity”. Breeding should be attempted only with healthy adults, separation capacity and a plan for eggs or young. Do not treat unverified triggers, sex ratios or hatch times as universal for this species.
Risks and Diseases: Use a secure cover and close escape gaps. Prevent problems through quarantine of new arrivals, stable water, appropriate feeding and daily observation. Similar signs can have different causes, so check parameters, history and diagnosis before medication. Follow the product label and qualified aquatic-veterinary advice; there is no universal reduced dose for a species or family.

Origine et répartition géographiques

A marine species; the enclosure should provide stability, oxygenation, space and shelter consistent with its behaviour without turning one habitat description into a mandatory recipe.

Origine

Océans tropicaux et récifsAfrique et MadagascarAsie de l'Est

Profil de poisson

Tempérament
Territorial
Lawnmower Blenny has a generally territorial temperament. Insufficient space, an unsuitable social ratio or incompatible tankmates can substantially change observed behaviour.
Régime alimentaire
Herbivore
It is an obligate herbivore that constantly grazes on microalgae. A mature tank with plenty of natural algae growth is required. Supplement with nori and herbivore pellets if algae is sparse.
Espérance de vie
2-6 years
Taille adulte
14 cm
Ratio des sexes
Solitary
Lawnmower Blenny is normally kept as a single individual and does not require conspecifics. The reference minimum is one individual and must not be read as permission to overcrowd the aquarium.
Fréquence d'alimentation
Twice daily
It grazes continuously throughout the day on the live rock. Supplemental feedings can be offered once daily. If natural algae is abundant, targeted feeding may not be needed.
Charge biologique
Medium
This marine blenny adds a relatively low bioload to the system. Standard protein skimming and live rock filtration are adequate. Routine maintenance will keep the water pristine.
Courant
Strong
It tolerates a wide range of flow conditions in the reef tank. Moderate to high flow is generally acceptable. It spends most of its time perched on rocks regardless of flow.
Risque de saut
Yes
There is a moderate jump risk for this blenny. A mesh screen or tightly fitted canopy should be used. It may dart to the surface when frightened.
Reproduction
Oviparous
Breeding in home aquariums is exceptionally rare. They lay adhesive eggs inside rocky crevices. Raising the tiny planktonic larvae is extremely difficult.
Compatibilité et compagnons
Reef safe with caution
The cohabitation profile is reef-safe with caution, with a generally territorial temperament. Keep at least one individual; tankmates, stocking density and decor must allow escape, rest and feeding without excessive competition. Watch interactions especially during feeding, maturity and breeding. Persistent chasing, injury or exclusion from food requires a change in stocking or layout, or separation of the animals.
Niveau dans le bac
Bottom
It is a benthic fish that stays firmly on the bottom and on rocks. It is constantly hopping from one perch to another. It very rarely swims in the open water column.

Modèles et paramètres scientifiques

FishBase

Fenêtre sur les données scientifiques officielles de l’espèce

FishBase v25.04Données synchronisées le : 15/06/2026
Niveau trophique
2 ± 0 se
Résilience
Élevée (moins de 15 mois)
Singularité phylogénétique (PD50)
0.5001
Relation bayésienne longueur-poids
a = 0.00871, b = 3
VulnérabilitéVulnérabilité faible (10 / 100)