aquarium
📖 Overview
aquarium (Tetragonopterus argenteus) is a ray-finned fish of the family Characidae. It inhabits freshwater waters in pelagic environments. This species can reach a maximum total length of 11.2 cm. With a trophic level of 3.6, it is a mid-level predator. It is assessed as Least Concern on the IUCN Red List. Commercially fished and consumed as food.
🔬 Taxonomy
🐟 Physical Description
Dorsal soft rays (total): 9; Anal soft rays: 28 - 40; Vertebrae: 27. This species is distinguished from all its congeners by the following characters: predorsal scales 11-17 (vs. 7-9); differs from T. anostomus, T. denticulatus, T. kuluene, T. juruena by the principal teeth in dentary 4 (vs. 5-6), and larger and more robust teeth (vs. thinner and sharper); differs from T. anostomus, T. araguaiensis by the number of gill-rakers on the upper limb of the first gill arch 12-15 (vs.17-20); differs from T. anostomus by having a terminal mouth (vs. subsuperior mouth); differs from T. ommatus the maxillary teeth 1-4 (vs. 7-8) and by the presence of a conspicuous dark mark on the caudal peduncle (vs. inconspicuous mark limited to the posterior portion of the caudal peduncle); differs from T. carvalhoi by having a rounded dark mark on the caudal peduncle (vs. lozenge-shaped dark mark on the caudal peduncle); differs from T. rarus by the absence of dark longitudinal stripes on the trunk (vs. presence of such stripes); differs from T. rarus, T. georgiae having the scale rows between lateral line and pelvic-fin origin 3.5 (vs. 4.5-5.5); differs from T. denticulatus by having humeral marks separated by one or two vertical rows of scales (vs. humeral marks separated by three vertical scale rows) .Cross section: compressed.
🌀 Behaviour
Behavioural data for aquarium is currently being reviewed.
🦐 Diet
🥚 Reproduction
Is being bred in Asia and Florida in ponds .
🌍 Habitat & Distribution
Freshwater; pelagic; pH range: 5.8 - 8.5; dH range: ? - 30. Tropical; 22°C - 27°C South America: Amazon basin, upper Essequibo, Orinoco, Parnaíba, Jaguaribe, Paraguay and lower Paraná river basins.
🌿 Ecology
📐 Morphometrics
🌡️ Water Parameters & Tolerance
🛡️ Conservation Assessment
📊 Population Risk & Fisheries
🍽️ Edibility & Flavour
"aquarium 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 aquarium is currently being compiled from USDA FoodData Central.
🔬 Mercury Safety
Mercury data for aquarium has not yet been assigned. Please consult FDA/EPA guidance for general seafood safety advice.
🌿 Sustainability
🔬 Full Nutritional Profile
Per 100g - Raw, per 100g - Source: USDA FoodData Central templates (generic fish average)
📊 Population Dynamics
| Year | Region | Index | Notes |
|---|---|---|---|
| - | - | - |
🌐 Names & Taxonomy
| Language | Common Names |
|---|---|
| 🇬🇧English | Dollar Tetra |
| 🌍CES | tetra stříbřitá |
| 🇵🇹Portuguese | Sauá |
| 🇪🇸Spanish | Chanquete · Mojarra |
🦠 Common Diseases
The following diseases are known to affect aquarium.
🔍 Similar Species
🗺️ Global Occurrence Map
Occurrence records from the Global Biodiversity Information Facility (GBIF) - 20 records indexed .
👥 Community & Contribute
No observations yet - be the first to log one!
View all observations for aquarium ↗Spotted incorrect or outdated data? Submit a correction and our editorial team will review it. Approved edits go live within 48 hours.
Found a factual error, broken data, or inappropriate content? Let us know and we will investigate promptly.