Red-spotted tetra
Copeina guttata
Also known as Redspotted copeina, Red spotted characin, Spotted copeina, Red Spot Splash Tetra
FreshwaterFish
Care at a glance
- Temperature
- 73–82°F
- 23–28°C
- pH
- 5.5–7.5
- Adult size
- 3.9 in
- 10 cm
- Minimum tank
- 32 gal
- 120 L
- Temperament
- Mostly peaceful
- Social behavior
- Social
- Swim level
- Middle
- Difficulty
- Easy
- Breeding
- Easy
- Rarity
- Rare
- Family
- Lebiasinidae
- Origin
- Native to the middle Amazon River basin in South America.
Overview
Keep a small group in a roomy tank with open swimming space and a secure lid, since they are active and will jump. They are mostly peaceful but boisterous, so choose robust rather than timid tankmates. Males color up strongly and spar during spawning.
In the wild
Found in the middle Amazon in streams and flooded areas, often near the surface in open water. It is an adaptable fish that copes with a range of conditions. Males become boldly spotted and colorful in the breeding season.
Good to know
Copeina guttata is one of the larger members of the family Lebiasinidae, the males studded with rows of red spots and reaching around 10 cm. Unlike egg scattering tetras, it digs a shallow pit in the substrate and guards the eggs. Fishbase lists a maximum standard length near 7.6 cm, though aquarium fish are often reported a little larger.
Did you know
Rather than scattering eggs and abandoning them like most tetras, the male digs a pit in the sand and stands guard over the clutch.
Weekly picks
Tank mates
Red-spotted tetra is a mostly peaceful, social species that keeps to the middle. These picks share a community profile with it, are safe together in both directions, and overlap on water type, temperature and pH.

Long nosed arched cory
Corydoras narcissus
Freshwater2.8 in (7 cm) · 30 gal (115 L)73–77°F (23–25°C)
Common hatchetfish
Gasteropelecus sternicla
Freshwater1.6 in (4 cm) · 33 gal (125 L)68–82°F (20–28°C)
Shortfin molly
Poecilia mexicana
FreshwaterBrackish4.3 in (11 cm) · 32 gal (120 L)72–82°F (22–28°C)
Candy striped pleco (L015)
Peckoltia vittata
Freshwater4.7 in (12 cm) · 30 gal (115 L)77–84°F (25–29°C)
Striped panchax
Aplocheilus lineatus
Freshwater4.3 in (11 cm) · 30 gal (115 L)72–77°F (22–25°C)
Montezuma swordtail
Xiphophorus montezumae
Freshwater5.5 in (14 cm) · 32 gal (120 L)68–79°F (20–26°C)
Common questions
What size tank does a Red-spotted tetra need?
A Red-spotted tetra needs at least 32 gal (120 L). It spends most of its time in the middle.
What temperature and pH does a Red-spotted tetra need?
A Red-spotted tetra is comfortable at 73–82°F (23–28°C) with a pH of 5.5–7.5.
How big does a Red-spotted tetra get?
An adult Red-spotted tetra reaches about 3.9 in (10 cm).
Related species
2.2 in (5.5 cm)18 gal (70 L)68–82°F (20–28°C)Splash tetra
Copella arnoldi
2.2 in (5.5 cm) · 18 gal (70 L)
1.2 in (3 cm)20 gal (75 L)75–82°F (24–28°C)Purple pencilfish
Nannostomus rubrocaudatus
1.2 in (3 cm) · 20 gal (75 L)
2.4 in (6 cm)18 gal (70 L)70–81°F (21–27°C)Golden pencilfish
Nannostomus beckfordi
2.4 in (6 cm) · 18 gal (70 L)
2.2 in (5.5 cm)16 gal (60 L)73–82°F (23–28°C)Harrison's pencilfish
Nannostomus harrisoni
2.2 in (5.5 cm) · 16 gal (60 L)
2.8 in (7 cm)20 gal (75 L)73–81°F (23–27°C)Spotted pyrrhulina
Pyrrhulina spilota
2.8 in (7 cm) · 20 gal (75 L)
2 in (5 cm)14 gal (54 L)73–81°F (23–27°C)Marilyn's pencilfish
Nannostomus marilynae
2 in (5 cm) · 14 gal (54 L)
