Wrestling Halfbeak
Dermogenys pusilla
Family: Zenarchopteridae • Origin: Various
Wrestling Halfbeak (Dermogenys pusilla) is a semi-aggressive other reaching 2.5 inches. Keep in groups of 3+. Minimum tank size: 10 gallons.
Min Tank
10 gal
Max Size
2.5"
Temperature
75-82°F
pH
7-8
Lifespan
4 years
School Size
3+
Swim Level
top
Hardness
5-15 dGH
semi-aggressiveintermediatecarnivoreschooling
Care Tips
- • Max size: 2.5 inches
- • Temperature: 75-82°F
- • pH: 7-8
- • Schooling — keep 3+ together
- • semi-aggressive temperament — choose tankmates carefully
Feeding: Standard carnivore diet. Accepts foods appropriate for Zenarchopteridae species.
Compatibility Notes: Typical semi-aggressive Zenarchopteridae species.
Tank Setup & Water Parameters
Tank Requirements
- Minimum Tank Size
- 10 gallons
- Recommended Tank Size
- 15 gallons
- Swimming Level
- top
- Minimum School Size
- 3+ fish
Water Parameters
- Temperature
- 75–82°F
- pH Range
- 7–8
- Hardness (dGH)
- 5–15
- Water Type
- freshwater
Behavior & Temperament
- Temperament
- semi-aggressive
- Aggression Level
- 3/5
- Schooling
- Yes
- Territorial
- Yes
- Fin Nipper
- No
- Predatory
- No
- Diet Type
- carnivore
- Growth Rate
- moderate
Typical semi-aggressive Zenarchopteridae species.
Breeding
- Breeding Type
- egg layer
- Breeding Difficulty
- moderate
- Lifespan
- 4 years
Ideal For
10 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

Knight Goby
Stigmatogobius sadanundio
72-82°FpH 7-8.520+ gal
semi-aggressive3.5"
Silver Hatchetfish
Gasteropelecus sternicla
72-82°FpH 6-710+ gal
peacefulschooling 6+2.5"

Figure 8 Puffer
Dichotomyctere ocellatus
75-82°FpH 7-810+ gal
semi-aggressive3"
Amazon Puffer
Colomesus asellus
72-82°FpH 6-7.510+ gal
semi-aggressiveschooling 3+3"