X-ray tetra
📖 Overview
Gregarious and non-aggressive. Occur in calm coastal waters ; in densely vegetated swamps. Feed on worms, small crustaceans and insects . Are popular among aquarists because of their robustness, peaceful character, and delicate colors . Reproduction is easily carried out, 300 to 400 eggs are obtained per spawn . Aquarium keeping: in groups of 5 or more individuals; minimum aquarium size 60 cm .
🔬 Taxonomy
🐟 Physical Description
Humeral spot round and small, about the size of the pupil; the dorsal fin black spot is over lined with white and underlined with yellow, color patterns of pelvic and anal fins are symmetrical; adipose fin is hyaline .: fusiform / normal; Cross section: oval.
🌀 Behaviour
Behavioural data for X-ray tetra is currently being reviewed.
🦐 Diet
🥚 Reproduction
🌍 Habitat & Distribution
Freshwater; pelagic; pH range: 6.0 - 8.0; dH range: ? - 35. Tropical; 24°C - 28°C South America: Amazon, Orinoco, and coastal river drainages of the Guianas.
🌿 Ecology
worms, small crustaceans and insects (Ref
📐 Morphometrics
🌡️ Water Parameters & Tolerance
🛡️ Conservation Assessment
📊 Population Risk & Fisheries
🍽️ Edibility & Flavour
"X-ray tetra 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 X-ray tetra is currently being compiled from USDA FoodData Central.
🔬 Mercury Safety
Mercury data for X-ray tetra 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
Scientific Synonyms
| Scientific Name | Author | Year | Status |
|---|---|---|---|
| Aphyocarax maxillaris | Ulrey | 1894 | Synonym |
| Aphyocharax maxillaris | Ulrey | 1894 | Synonym |
| Holopristes riddlei | Meek | 1907 | Synonym |
| Holopristis riddlei | Meek | 1907 | Synonym |
| Pristella riddlei | Meek | 1907 | Synonym |
🦠 Common Diseases
The following diseases are known to affect X-ray tetra.
🔍 Similar Species
🗺️ Global Occurrence Map
Occurrence records from the Global Biodiversity Information Facility (GBIF) - 126 records indexed .
👥 Community & Contribute
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