Freshwater Flounder
Achirus lineatus
Family: Achiridae • Origin: Various
Freshwater Flounder (Achirus lineatus) is a peaceful other reaching 4 inches. Can be kept singly. Minimum tank: 20 gallons.
Min Tank
20 gal
Max Size
4"
Temperature
72-82°F
pH
7-8
Lifespan
5 years
School Size
Solo OK
Swim Level
bottom
Hardness
5-15 dGH
peacefuladvancedcarnivore
Care Tips
- • Max size: 4"
- • Temp: 72-82°F
- • pH: 7-8
- • Can be kept alone
- • peaceful temperament
Feeding: Standard carnivore diet for Achiridae.
Compatibility Notes: Typical peaceful Achiridae species.
Tank Setup & Water Parameters
Tank Requirements
- Minimum Tank Size
- 20 gallons
- Recommended Tank Size
- 30 gallons
- Swimming Level
- bottom
Water Parameters
- Temperature
- 72–82°F
- pH Range
- 7–8
- Hardness (dGH)
- 5–15
- Water Type
- freshwater
Behavior & Temperament
- Temperament
- peaceful
- Aggression Level
- 1/5
- Schooling
- No
- Territorial
- No
- Fin Nipper
- No
- Predatory
- No
- Diet Type
- carnivore
- Growth Rate
- moderate
Typical peaceful Achiridae species.
Breeding
- Breeding Type
- egg layer
- Breeding Difficulty
- difficult
- Lifespan
- 5 years
Ideal For
20 gallon
Compatible Tank Mates
View all →
Black Neon Tetra
Hyphessobrycon herbertaxelrodi
73-81°FpH 5.5-7.510+ gal
peacefulschooling 6+1.6"
Serpae Tetra
Hyphessobrycon eques
72-82°FpH 6-7.520+ gal
semi-aggressiveschooling 6+1.75"
Black Skirt Tetra
Gymnocorymbus ternetzi
70-82°FpH 6-7.515+ gal
peacefulschooling 5+3"
Congo Tetra
Phenacogrammus interruptus
75-81°FpH 6-7.530+ gal
peacefulschooling 6+3.5"
Betta Fish
Betta splendens
76-82°FpH 6.5-7.55+ gal
semi-aggressive3"
Guppy
Poecilia reticulata
72-82°FpH 6.8-7.810+ gal
peacefulschooling 3+2.5"
Similar Species
Freshwater Sole
Brachirus panoides
75-82°FpH 7-820+ gal
peaceful4"
Peacock Gudgeon
Tateurndina ocellicauda
72-79°FpH 6.5-7.510+ gal
peacefulschooling 4+3"
African Dwarf Frog
Hymenochirus boettgeri
72-82°FpH 6.5-7.510+ gal
peacefulschooling 3+2.5"
Indian Glassfish
Parambassis ranga
68-82°FpH 7-810+ gal
peacefulschooling 5+3"