Darter tetra
Characidium fasciatum
Also known as Darter characin, Banded darter tetra, Barred darter characin
Care at a glance
- Temperature
- 68–79°F (20–26°C)
- pH
- 6.0–7.5
- Adult size
- 2.8 in (7 cm)
- Minimum tank
- 16 gal (60 L)
- Temperament
- Peaceful
- Social behavior
- Social
- Swim level
- Bottom
- Difficulty
- Medium
- Breeding
- Hard
- Rarity
- Rare
- Origin
- Widespread across river basins of eastern and central South America.
- Family
- Crenuchidae
Overview
This is a bottom dweller rather than a mid water schooler, so give it a sandy or fine gravel floor with stones and wood to perch on. It is peaceful and a little territorial with its own kind, so allow space if you keep several. Cooler, well oxygenated, flowing water suits it best.
In the wild
Lives along the bottom of flowing streams and rivers, often over sand and gravel among stones and roots. It props itself on its pectoral fins and darts between resting spots rather than swimming in open water. It picks small invertebrates from the substrate.
Good to know
Characidium fasciatum is a small, bottom hugging characin of around 6 cm, marked with a row of dark bars along a pale body. It belongs to the family Crenuchidae, the South American darters. It perches on its fins in the manner of a goby or true darter.
Did you know
Instead of cruising with a school, it spends its time perched on its fins and making short darting hops along the bottom, just like the darters it is named after.
Where to buy
Some links may not be the exact species or variety.
…or ask your local fish store.
Appears in
Keeping Darter tetra?
Track water tests, reminders and stocking fit.
Related species

Sailfin tetra
Crenuchus spilurus2.4 in (6 cm)20 gal (75 L)73–82°F (23–28°C)
Peppered cory
Corydoras paleatus2.8 in (7 cm)21 gal (80 L)72–79°F (22–26°C)
Fathead minnow
Pimephales promelas3 in (7.5 cm)20 gal (75 L)50–72°F (10–22°C)
Zebra pleco
Hypancistrus zebra3.1 in (8 cm)15 gal (55 L)79–86°F (26–30°C)
Dwarf bumblebee catfish
Pseudomystus leiacanthus2.4 in (6 cm)20 gal (75 L)70–77°F (21–25°C)
Weitzman's cory
Corydoras weitzmani2.4 in (6 cm)20 gal (75 L)72–79°F (22–26°C)
