Golden Wonder Killifish
Aplocheilus lineatus
Family: Aplocheilidae • Origin: Various
Golden Wonder Killifish (Aplocheilus lineatus) is a semi-aggressive killifish reaching 4 inches. Can be kept singly. Minimum tank size: 20 gallons.
Min Tank
20 gal
Max Size
4"
Temperature
72-79°F
pH
6-7.5
Lifespan
6 years
School Size
Solo OK
Swim Level
top
Hardness
5-15 dGH
semi-aggressiveintermediatecarnivore
Care Tips
- • Max size: 4 inches
- • Temperature: 72-79°F
- • pH: 6-7.5
- • Can be kept alone or in pairs
- • semi-aggressive temperament — choose tankmates carefully
Feeding: Standard carnivore diet. Accepts foods appropriate for Aplocheilidae species.
Compatibility Notes: Typical semi-aggressive Aplocheilidae species.
Tank Setup & Water Parameters
Tank Requirements
- Minimum Tank Size
- 20 gallons
- Recommended Tank Size
- 30 gallons
- Swimming Level
- top
Water Parameters
- Temperature
- 72–79°F
- pH Range
- 6–7.5
- Hardness (dGH)
- 5–15
- Water Type
- freshwater
Behavior & Temperament
- Temperament
- semi-aggressive
- Aggression Level
- 3/5
- Schooling
- No
- Territorial
- Yes
- Fin Nipper
- No
- Predatory
- No
- Diet Type
- carnivore
- Growth Rate
- moderate
Typical semi-aggressive Aplocheilidae species.
Breeding
- Breeding Type
- egg layer
- Breeding Difficulty
- moderate
- Lifespan
- 6 years
Ideal For
20 gallon
Compatible Tank Mates
View all →
Neon Tetra
Paracheirodon innesi
70-81°FpH 6-710+ gal
peacefulschooling 6+1.5"
Cardinal Tetra
Paracheirodon axelrodi
73-81°FpH 4.5-6.510+ gal
peacefulschooling 6+2"
Ember Tetra
Hyphessobrycon amandae
73-84°FpH 5.5-75+ gal
peacefulschooling 8+0.8"
Rummy Nose Tetra
Hemigrammus rhodostomus
75-84°FpH 5.5-720+ gal
peacefulschooling 6+2.5"
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"
Similar Species
Gardneri Killifish
Fundulopanchax gardneri
72-79°FpH 6-710+ gal
semi-aggressive2.5"
Blue Lyretail Killifish
Fundulopanchax gardneri
72-79°FpH 6-710+ gal
semi-aggressive2.5"
Steel Blue Killifish
Fundulopanchax gardneri nigerianus
72-79°FpH 6-710+ gal
semi-aggressive2.5"
Dwarf Gourami
Trichogaster lalius
72-82°FpH 6-7.510+ gal
semi-aggressive3.5"