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💧 Freshwater Least Concern 🐠 Aquarium 🌡️ Temperate

Monkey goby

Neogobius fluviatilis Pallas, 1814
Max Length
20 cm
Max Weight
-
Lifespan
5 yrs
Trophic Level
3.4
Depth
-
Climate
Temperate
Resilience
High
Vulnerability
21.00/100
Typical Length
-
Depth Zone
-

📖 Overview

Occurs in inshore habitats, estuaries and brackish- and fresh-water lagoons and lakes; large to medium sized rivers and streams; on sand or mud bottom. It is one of the most abundant fish in lowland rivers. This species lives up to 5 years; spawns for the first time at 2 years; spawning season in April to July, locally until September, when temperature is above 13°C; females may repeat spawning during a season. Males with body completely black with yellow fin margins during the spawning season; these excavate nests under any kind of hard substrate and guard eggs until hatching; with adhesive eggs deposited on stones, shells and aquatic plants. Feeds on a variety of invertebrates, especially molluscs.

Scientific Name
Neogobius fluviatilis
Authority
Pallas, 1814
Habitat
Freshwater
Climate
Temperate
Body Shape
Fusiform / normal
IUCN Status
LC
Max Length
20 cm
Lifespan
5 years
Trophic Level
3.4
Resilience
High
Vulnerability
21.00/100
Water Temp
4–20 °C

🔬 Taxonomy

🐟 Physical Description

Dorsal spines (total): 7; Dorsal soft rays (total): 14 - 18; Anal spines: 1; Anal soft rays: 12 - 17. This species is distinguished from its congeners entering freshwater in the Black Sea basin by the following characters: first branched ray of second dorsal about twice as long as penultimate ray; completely scaled nape; pelvic-disc fraenum with small rounded lobes and the length is less than 1/6 of width at base; pelvic disc reaching 90-100% of distance between its origin and anus; scales in midlateral series 55-61 + 2-4; posterior part of first dorsal without black spot .: fusiform / normal.

🌀 Behaviour

Behavioural data for Monkey goby is currently being reviewed.

🦐 Diet

aquatic invertebrates
small fish
algae
detritus

🥚 Reproduction

🐣 Oviparous
Spawning Season
spring
Spawn Location
Substrate
Fertilization
External

Deposits oval eggs on stones. Male guards the eggs for 3-4 days.Males have completely black body with yellow fin margins during spawning season..

🌍 Habitat & Distribution

Freshwater; brackish; benthopelagic. Temperate; 4°C - 20°C ; 56°N - 36°N, 25°E - 54°E recorded in 1997 from middle Vistula (Poland), reaching from Dniepr via a navigation canal.

🌿 Ecology

Zone Preferences
💧 Freshwater 🌿 Brackish
Trophic Level
3.4±0.1
Food Items

a variety of invertebrates, especially molluscs (Ref

📐 Morphometrics

Length–Weight Relationship: W = 0.01 × L3.03 (TL)
Max TL
20cm
Dorsal Spines
7
Dorsal Rays
16
Anal Spines
1
Anal Rays
15

🌡️ Water Parameters & Tolerance

Temperature Range
4–20°C

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2022

📊 Population Risk & Fisheries

Population Resilience
High
Minimum doubling time
Fishing Vulnerability
21.00/100
Low vulnerability
Trophic Level
3.4
Predator
Body Shape
Fusiform / normal
Climate Zone
Temperate
Described By
Pallas, 1814

🌐 Names & Taxonomy

Language Common Names
🇬🇧English babka goby · Monkey goby
🌍BEL Bychok-pesochnik · Бычок-пясочнік
🌍BUL Речно попче
🌍CES hlaváč říční
🇩🇪German Flussgrundel
🌍ELL Νεογωβιός ποταμού · Ποντιακός νεογωβιός
🌍EST Jõe-uusmudil
🇫🇮Finnish jokitokko
🇫🇷French Gobie fluviatile
🇭🇷Croatian Riječni glavočić
🇭🇺Hungarian Folyami géb
🌍LIT kaspijinis upinis grundalas
🇳🇱Dutch Pontische stroomgrondel
🇵🇱Polish Babka rzeczna · babka szczupła
🌍RON Guvid de balta · Zimbraș
🇷🇺Russian Бычок песочник · Бычок-Песочник · бычок-песчаник · Речной бычок
🌍SLV Býčko piesočný
🇪🇸Spanish Gobio de río
🌍SRP Главоч пескар
🇸🇪Swedish sandsmörbult
🌍TUR tatlisu kaya baligi · tatlısu kaya balığı
🌍UKR Бичок пісочник · Бичо́к-бáбка · Бичок-бабка · Бичок-пісочник · Бичок-піщаник

Scientific Synonyms

Scientific Name Author Year Status
Apollonia fluviatilis Pallas 1814 Synonym
Gobius fluviatilis Pallas 1814 Homotypic
Gobius fluviatilis nigra Kessler 1859 Heterotypic
Gobius lacteus Nordmann 1840 Synonym
Gobius sordidus Bennett 1835 Heterotypic
Gobius stevenii Nordmann 1840 Synonym
Neogobius fluviatilis fluviatilis Pallas 1814 Synonym

🗺️ Global Occurrence Map

Occurrence records from the Global Biodiversity Information Facility (GBIF) - 14 records indexed .

Occurrence density from GBIF View GBIF records ↗

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