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Apri l'appDescrizione
Gobius cruentatus, commonly known as the Red-mouthed Goby, is a demersal fish belonging to the family Gobiidae. It is characterized by its robust body, distinctive coloration, and territorial behavior. This species is a common inhabitant of rocky and sandy-muddy bottoms in the Mediterranean Sea and adjacent Atlantic waters, playing an ecological role as a benthic predator.
Caratteristiche fisiche
- Forma del corpo
- elongated
- Colorazione
- The body is typically mottled brown to reddish-brown, often with darker blotches or bands that provide camouflage against the substrate. The most striking feature is the bright red or orange coloration inside the mouth and on the edges of the gill covers, which is particularly prominent when the fish displays aggression or yawns. The fins are generally translucent with some darker markings.
- Tipo di squame
- ctenoid
- Posizione della bocca
- terminal
- Caratteristiche distintive
- Bright red or orange coloration inside the mouth and on the opercular margins., Two dorsal fins, the first with 6-7 spines, the second with 1 spine and 13-15 soft rays., Large head with prominent eyes., Robust body with ctenoid scales., Pelvic fins fused into a disc-like sucker.
- Pinna dorsale
- Two dorsal fins; D1: VI-VII spines; D2: I spine, 13-15 soft rays. The first dorsal fin is typically higher than the second.
- Pinna caudale
- Rounded caudal fin.
- Pinna pettorale
- Large and rounded pectoral fins, typically with 17-19 rays.
- Pinne distintive
- Pelvic fins are fused into a single, anteriorly concave, disc-shaped sucker, characteristic of gobies, used for adhesion to substrates.
Consigli per l'identificazione
Mouth Coloration
The most definitive feature is the vivid red or orange coloration inside the mouth and on the opercular margins. This is often visible when the fish opens its mouth, especially during territorial displays or feeding.
Body Shape and Color
Elongated, robust body with mottled brown to reddish-brown patterns. Look for darker blotches or bands that help it blend with the substrate.
Fin Structure
Observe the two distinct dorsal fins and the fused pelvic fins forming a suction cup. The first dorsal fin is usually taller than the second.
Size
Adults typically reach a maximum total length of 18-20 cm, though most commonly observed specimens are 10-15 cm.
Habitat
- Tipo di acqua
- saltwater
- Profondità
- Typically found from shallow coastal waters (1-2 meters) down to about 40-50 meters, occasionally deeper.
- Ambiente
- Prefers rocky bottoms, areas with pebbles, gravel, and sandy-muddy substrates, often near seagrass beds (Posidonia oceanica). It seeks shelter in crevices, under rocks, or in empty mollusc shells.
- Areale geografico
- Mediterranean Sea, including the Black Sea, and the eastern Atlantic Ocean from the British Isles south to Senegal, including the Canary Islands.
Informazioni sull'acquario
- Livello di cura: intermediate
- Temperamento: territorial
- Dieta: carnivore
- Dimensione minima della vasca: 100 liters (26 gallons)
- Temperatura: 18-24°C (64-75°F)
- Livello di pH: 8.1-8.4
- Durezza: 8-12 dKH
- Compatibilità: Best kept in a species-specific tank or with other robust, non-aggressive benthic species. Avoid keeping with very small or shy fish due to its territorial nature.
- Requisiti speciali: Requires ample rockwork and crevices for hiding and establishing territories. A sand or fine gravel substrate is beneficial for natural burrowing behavior. Good water quality and stable parameters are crucial.
Informazioni in natura
- Stato di conservazione: least concern
- Stagionalità: No specific commercial seasonality; generally available year-round in its natural range, though not a target species for commercial fisheries.
- Prezzo di mercato: Low
- Importanza commerciale: low
- Sapore: Mild, slightly sweet
- Consistenza: Firm, flaky
- Metodi di cottura: Frying, Grilling, Stewing
- Valore nutrizionale: Good source of protein and omega-3 fatty acids, typical for lean white fish.
Fatti chiave
Territorial Displaysbehavior
The bright red coloration inside its mouth is primarily used for territorial displays and intimidation towards rivals or predators. When threatened or asserting dominance, it will open its mouth wide to flash this striking color.
Benthic Lifestylebehavior
Gobius cruentatus is a classic benthic species, spending most of its life on or near the seabed. Its fused pelvic fins act as a suction cup, allowing it to firmly attach itself to rocks and other substrates, even in strong currents.
Dietary Habitsbehavior
This goby is an opportunistic carnivore, feeding on a variety of small benthic invertebrates such as crustaceans (amphipods, isopods, small crabs), polychaete worms, and molluscs. It uses its keen eyesight to spot prey and ambushes them from its hiding spots.
Reproductive Strategybehavior
Like many gobies, Gobius cruentatus exhibits parental care. The male typically guards the eggs, which are laid in crevices or under rocks, until they hatch. Spawning usually occurs during the warmer months.
Longevityinteresting
In the wild, the Red-mouthed Goby typically lives for about 3-5 years, though some individuals may live longer under optimal conditions.
Informazioni di sicurezza
Maneggiare con cura- Livello di sicurezza: caution
- Velenoso: No
- Commestibilità: edible
- Note sul maneggio: While not venomous, Gobius cruentatus can deliver a painful bite if handled carelessly due to its strong jaws and sharp teeth. It is advisable to handle them with caution, preferably using gloves or a net, to avoid being bitten. They are generally not aggressive towards humans unless provoked.
Specie simili
Giant Goby
Gobius cobitis
Gobius cobitis is generally larger (up to 27 cm), has a more elongated body, and lacks the prominent red mouth coloration. Its coloration is typically more uniformly grey-brown, and it prefers intertidal rock pools.
Black Goby
Gobius niger
Gobius niger is typically darker, often blackish, especially in males during breeding season. It has a distinct black spot on the anterior part of the first dorsal fin and lacks the red mouth coloration. It often inhabits brackish waters and muddy bottoms.
Rock Goby
Gobius paganellus
Gobius paganellus has a distinct white or pale stripe along the upper edge of the first dorsal fin and lacks the red mouth. It is generally smaller and has a more uniform brown coloration.
Classificazione scientifica
- Regno
- Animalia
- Phylum
- Chordata
- Classe
- Actinopterygii
- Ordine
- Gobiiformes
- Famiglia
- Gobiidae
- Genere
- Gobius
- Specie
- Gobius cruentatus
Esplora Red-mouthed Goby
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