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Apri l'appDescrizione
Gobius niger, commonly known as the Black Goby, is a small, benthic fish belonging to the family Gobiidae. It is characterized by its robust body, large head, and prominent eyes. The species exhibits sexual dimorphism, particularly during the breeding season, with males developing darker coloration and more pronounced finnage. It is a common inhabitant of coastal and estuarine environments across its range.
Caratteristiche fisiche
- Forma del corpo
- elongated
- Colorazione
- Generally dark brown to black, often mottled with lighter patches or spots, providing camouflage against the substrate. During breeding season, males become intensely black with iridescent blue or green spots on the fins. Females are typically lighter brown.
- Tipo di squame
- ctenoid
- Posizione della bocca
- terminal
- Caratteristiche distintive
- Two dorsal fins, the first with 6-7 spines, the second with 1 spine and 12-15 soft rays., Pelvic fins fused into a suction cup-like disc., Large head with prominent eyes positioned dorsally., A distinct black spot on the anterior part of the first dorsal fin (more pronounced in males)., Lateral line absent.
- Pinna dorsale
- Two dorsal fins; the first is spiny (D1 VI-VII), the second is soft-rayed (D2 I/12-15). The first dorsal fin is typically higher than the second.
- Pinna caudale
- Rounded caudal fin.
- Pinna pettorale
- Large and rounded pectoral fins.
- Pinne distintive
- Pelvic fins are completely fused to form a single, anteriorly concave, adhesive disc, characteristic of gobies.
Consigli per l'identificazione
Dorsal Fins
Observe the two distinct dorsal fins. The first dorsal fin has 6-7 spines and often a prominent black spot, especially in males. The second dorsal fin is longer and soft-rayed.
Pelvic Fins
Look for the fused pelvic fins forming a suction cup-like disc on the underside of the body, a key characteristic of gobies.
Coloration
Note the overall dark brown to black coloration, often mottled. Males in breeding season are intensely black with iridescent blue/green spots on fins.
Head Shape
The head is relatively large and broad, with eyes positioned high on the head.
Habitat
- Tipo di acqua
- brackish
- Profondità
- Typically found in shallow waters, from 0 to 50 meters, though occasionally deeper.
- Ambiente
- Prefers soft substrates such as sand, mud, or fine gravel, often in areas with seagrass beds (e.g., Zostera, Posidonia) or algal growth. Commonly found in estuaries, lagoons, coastal embayments, and sheltered marine areas. Tolerant of a wide range of salinities.
- Areale geografico
- Eastern Atlantic Ocean, from the Baltic Sea and Norway south to Morocco, including the Mediterranean Sea, Black Sea, and Sea of Azov.
Informazioni sull'acquario
- Livello di cura: intermediate
- Temperamento: territorial
- Dieta: carnivore
- Dimensione minima della vasca: 75 liters (20 gallons)
- Temperatura: 10-24°C (50-75°F)
- Livello di pH: 7.5-8.5
- Durezza: 10-25 dGH
- Compatibilità: Best kept in a species-specific tank or with other robust, non-aggressive brackish or marine species that can tolerate similar water parameters. Avoid very small or delicate tank mates as they may be preyed upon.
- Requisiti speciali: Requires a well-established tank with plenty of hiding spots, such as rocks, caves, and PVC pipes. A sandy or fine gravel substrate is preferred as they often burrow. Good filtration and stable water parameters are crucial. Can be kept in brackish or full marine setups.
Informazioni in natura
- Stato di conservazione: least concern
- Stagionalità: Spawning typically occurs from spring to late summer (April to August), during which males exhibit more intense coloration and territorial behavior.
- 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.
Fatti chiave
Parental Carebehavior
Male Black Gobies exhibit strong parental care, guarding the eggs laid by the female in a nest (often under a shell or rock) until they hatch.
Habitat Adaptabilityinteresting
Gobius niger is highly adaptable to varying salinities, allowing it to thrive in both fully marine and brackish estuarine environments.
Suction Cup Finsamazing
The fused pelvic fins form a powerful suction cup, enabling the goby to cling to rocks and other surfaces in strong currents.
Dietary Opportunistbehavior
Its diet is highly opportunistic, consisting of small invertebrates, crustaceans, and polychaetes found in the benthic environment.
Informazioni di sicurezza
Sicuro- Livello di sicurezza: safe
- Velenoso: No
- Commestibilità: edible
- Note sul maneggio: Gobius niger is not venomous. When handling, care should be taken to avoid accidental fin pricks, as with any fish, but there are no known toxic properties. They can be quite slippery and may attempt to bite if threatened, though their small teeth pose no significant danger to humans.
Specie simili
Sand Goby
Pomatoschistus minutus
The Sand Goby is generally smaller, paler, and has a more slender body. It lacks the prominent black spot on the first dorsal fin and the intense dark coloration of the Black Goby. Its pelvic fins are also fused, but the overall body shape and fin morphology differ.
Common Goby
Pomatoschistus microps
Similar in size to the Sand Goby, the Common Goby is also paler and more slender than the Black Goby. It typically has a smaller head and lacks the distinct black spot on the first dorsal fin. Its habitat preference often leans towards more brackish or even freshwater conditions in some areas.
Rock Goby
Gobius paganellus
The Rock Goby has a more robust body and a distinct white or pale margin on the upper edge of the first dorsal fin, which is absent in Gobius niger. While also dark, its coloration is typically more mottled brown and less uniformly black than a breeding male Black Goby.
Classificazione scientifica
- Regno
- Animalia
- Phylum
- Chordata
- Classe
- Actinopterygii
- Ordine
- Gobiiformes
- Famiglia
- Gobiidae
- Genere
- Gobius
- Specie
- Gobius niger
Esplora Black Goby
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