Espei rasbora
Trigonostigma espei
Also known as lambchop rasbora, Pork Chop Rasbora
FreshwaterFish
Care at a glance
- Temperature
- 73–82°F
- 23–28°C
- pH
- 6.0–7.0
- Adult size
- 1.5 in
- 3.8 cm
- Minimum tank
- 11 gal
- 40 L
- Temperament
- Peaceful
- Social behavior
- Schooling
- Swim level
- Middle
- Difficulty
- Easy
- Breeding
- Egg layer · Hard
- Rarity
- Rare
- Family
- Cyprinidae
- Origin
- Thailand, Cambodia
Overview
The Espei rasbora is a small, peaceful schooling fish for a planted community tank. It is easy to keep.
Did you know
Espei rasboras turn a warm copper-orange over the body once they settle in. Hobbyists sometimes call them lambchop rasboras, after the shape of their black wedge.
Caring for the Espei rasbora
Keep Espei rasboras in a group of at least six to eight, and more if you can, so they school properly. A tank of 11 gal (40 L) or more suits a school. Give them a planted tank with gentle current and some shade.
Soft water at a pH of 6.0 to 7.0 brings out their best color. Hold the temperature at 73 to 82°F (23 to 28°C). Feed quality flake, micro pellets and small frozen foods like brine shrimp or finely chopped bloodworm. Good water and a varied diet deepen their copper tone.
Espei rasboras are peaceful fish of the middle water that pair well with other small, calm species. They lay eggs, scattering or attaching them near plants, and give no parental care. Breeding them at home is considered difficult.
Good to know
The Espei rasbora, Trigonostigma espei, is a small cyprinid in the family Cyprinidae, closely related to the harlequin rasbora. It carries a narrow black wedge along the rear half of the body, slimmer than the harlequin's broad triangle. It also goes by pork chop rasbora. The IUCN lists it as Least Concern.
In the wild
Espei rasboras come from slow streams and rivers in Thailand and Cambodia, often in water stained dark by tannins from rotting leaves. The water is soft and slightly acidic, with plenty of plant cover over fine sand or silt.
Weekly picks
Tank mates
The Espei rasbora is a peaceful, schooling 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.

Neocaridina shrimp
Neocaridina davidi
Freshwater1.6 in (4 cm) · 5 gal (19 L)59–84°F (15–29°C)
Guppy
Poecilia reticulata
FreshwaterBrackish2.4 in (6 cm) · 10 gal (38 L)64–82°F (18–28°C)
Neon tetra
Paracheirodon innesi
Freshwater1.5 in (3.8 cm) · 11 gal (40 L)70–77°F (21–25°C)
Chopstick snail
Stenomelania torulosa
Freshwater2 in (5 cm) · 11 gal (40 L)73–82°F (23–28°C)
Dwarf thorny catfish
Physopyxis lyra
Freshwater1.4 in (3.5 cm) · 11 gal (40 L)73–82°F (23–28°C)
Green panchax
Aplocheilus blockii
Freshwater2 in (5 cm) · 11 gal (40 L)72–82°F (22–28°C)
Common questions
What size tank does an Espei rasbora need?
An Espei rasbora needs at least 11 gal (40 L). It spends most of its time in the middle.
What temperature and pH does an Espei rasbora need?
An Espei rasbora is comfortable at 73–82°F (23–28°C) with a pH of 6.0–7.0.
What does an Espei rasbora eat?
An Espei rasbora eats quality flake and micro pellets. Small frozen foods like brine shrimp or finely chopped bloodworm suit it too.
How big does an Espei rasbora get?
An adult Espei rasbora reaches about 1.5 in (3.8 cm).
Does an Espei rasbora need a group?
Yes. An Espei rasbora is a schooling species and should be kept in a group, not singly.
How does an Espei rasbora breed?
Espei rasboras lay eggs, scattering or attaching them near plants, and give no parental care. Breeding them at home is considered difficult.
Related species
1.6 in (4 cm)12 gal (45 L)73–82°F (23–28°C)Glowlight rasbora
Trigonostigma hengeli
1.6 in (4 cm) · 12 gal (45 L)
2 in (5 cm)15 gal (55 L)72–82°F (22–28°C)Harlequin rasbora
Trigonostigma heteromorpha
2 in (5 cm) · 15 gal (55 L)
1 in (2.5 cm)12 gal (45 L)73–81°F (23–27°C)Somphongs's rasbora
Trigonostigma somphongsi
1 in (2.5 cm) · 12 gal (45 L)
1.5 in (3.7 cm)15 gal (55 L)64–79°F (18–26°C)Spotted danio
Danio nigrofasciatus
1.5 in (3.7 cm) · 15 gal (55 L)
1.6 in (4 cm)20 gal (75 L)68–79°F (20–26°C)Canius barb
Pethia canius
1.6 in (4 cm) · 20 gal (75 L)
1.6 in (4 cm)14 gal (54 L)73–82°F (23–28°C)Drape-fin barb
Oreichthys crenuchoides
1.6 in (4 cm) · 14 gal (54 L)
