Longnose dace
📖 Overview
Adults inhabit rubble and gravel riffles (sometimes runs and pools) of fast creeks and small to medium rivers as well as rocky shores of lakes . Young up to 4 months are pelagic . Adults form schools and feed on mayflies, blackflies, and midges . Spawning takes place over pits in loose gravel substrate . Widely used as bait in the USA . Artificially propagated in Minnesota, USA in long narrow ponds having weak water flow .
🔬 Taxonomy
🐟 Physical Description
Vertebrae: 40 - 42. Absence of a groove between the upper lip and tip of snout. Barbel present. Snout long and overhanging.: elongated.
🌀 Behaviour
Behavioural data for Longnose dace is currently being reviewed.
🦐 Diet
Diet information for Longnose dace is currently being compiled.
🥚 Reproduction
Ovarian development probably of the group-synchronous type. Fecundity is determinate based on release of great majority of oocytes in a given spawning season, few signs of atretic oocytes and oocyte diameter distribution points to lack of substantial production of new oocytes . Spawn on rock and gravel. Larvae benthic . According to a study , although no nest is built, a territory is established and one parent guards the nest. In Manitoba, females lay 200-1200 transparent eggs hatching in 7-10 days at 15.6°C. Young are pelagic and inhabit quiet waters inshore; pelagic stage lasts 4 months before typical bottom dwelling existence of adults commence (Ref 1998). Spawn in riffles over gravelly bottom near nest of river chub.
🌍 Habitat & Distribution
Freshwater; demersal; pH range: ? - 7.0; dH range: 10 - 15; potamodromous . Subtropical; 4°C - 16°C ; 69°N - 28°N North America: distributed above 40°N from coast to coast; as far north as Arctic Circle in Mackenzie River drainage; south in Appalachian Mountains to northern Georgia and in Rocky Mountains south into Rio Grande drainage of Texas and northern Mexico.
🌿 Ecology
mayflies, blackflies, and midges (Ref
📐 Morphometrics
🌡️ Water Parameters & Tolerance
🛡️ Conservation Assessment
📊 Population Risk & Fisheries
🍽️ Edibility & Flavour
"Longnose dace is an edible species."
- Clear, bright eyes — cloudy eyes indicate age
- Firm flesh that springs back when pressed
- Fresh ocean smell, never strong or ammonia-like
- Bright red or pink gills, not grey or brown
- Shiny, moist skin with scales tightly attached
- Cloudy or sunken eyes
- Strong fishy or ammonia odour
- Soft, mushy flesh that doesn't spring back
- Discoloured or dry flesh
⚡ Nutrition
Detailed nutritional data for Longnose dace is currently being compiled from USDA FoodData Central.
🔬 Mercury Safety
Mercury data for Longnose dace has not yet been assigned. Please consult FDA/EPA guidance for general seafood safety advice.
🌿 Sustainability
🌐 Names & Taxonomy
Scientific Synonyms
| Scientific Name | Author | Year | Status |
|---|---|---|---|
| Argyreus dulcis | Girard | 1856 | Synonym |
| Gobio cataractae | Valenciennes | 1842 | Synonym |
| Leuciscus nasutus | Ayres | 1843 | Synonym |
| Rhinichthys cataractae cataractae | Valenciennes | 1842 | Synonym |
| Rhinichthys cataractae dulcis | Girard | 1856 | Synonym |
| Rhinichthys cataractae ocella | Garman | 1881 | Synonym |
| Rhinichthys cataractae smithi | Nichols | 1916 | Synonym |
| Rhinichthys luteus | Garman | 1881 | Synonym |
| Rhinichthys marmoratus | Agassiz | 1850 | Synonym |
| Rhinichthys maxillosus | Cope | 1865 | Synonym |
| Rhinichthys ocella | Garman | 1881 | Synonym |
| Rhinichthys transmontanus | Cope | 1879 | Synonym |
🔍 Similar Species
🗺️ Global Occurrence Map
Occurrence records from the Global Biodiversity Information Facility (GBIF) — 540 records indexed .
👥 Community & Contribute
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