Humphead glassfish
Parambassis pulcinella
Also known as Humphead perchlet, Humphead glass perchlet
FreshwaterFish
Care at a glance
- Temperature
- 73–81°F
- 23–27°C
- pH
- 7.0–7.5
- Adult size
- 3.9 in
- 10 cm
- Minimum tank
- 32 gal
- 120 L
- Temperament
- Mostly peaceful
- Social behavior
- Shoaling
- Swim level
- Middle
- Difficulty
- Medium
- Breeding
- Hard
- Rarity
- Rare
- Family
- Ambassidae
- Origin
- Native to the Ataran River within the Salween basin of southeastern Myanmar and western Thailand, in clear, highly oxygenated rivers near rapids and riffles.
Overview
Keep a group of eight or more in a tank of 120 litres or larger at 23 to 27 C with a neutral pH of 7.0 to 7.5 and brisk, oxygen rich flow. Groups spread out any minor territorial sparring between males and look far better than a few individuals. It suits an active community of similarly sized, current loving fish. Feed small live and frozen foods such as bloodworm, daphnia and brine shrimp, as it often ignores dry flake.
In the wild
Humphead glassfish come from clear, fast, highly oxygenated stretches of river near rapids and riffles. They are active, semi-transparent fish that shoal in open water. Give them a long tank of 120 litres or more with strong flow, powerful filtration and extra aeration, plus some driftwood and plants along the edges. They are sensitive to poor water quality and the build up of nitrogenous waste.
Good to know
Parambassis pulcinella is a freshwater glassfish in the family Ambassidae, described by Kottelat in 2003. Mature fish develop a prominent forehead hump, and the species name pulcinella refers to a humpbacked character from Italian comic theater. The semi-transparent body shows the backbone and swim bladder through the flanks.
Did you know
Only mature fish grow the tall forehead hump, and males use it along with their raised fins to display to one another.
Weekly picks
Tank mates
Humphead glassfish is a mostly peaceful, shoaling 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)
Blackwing hatchetfish
Carnegiella marthae
Freshwater1.4 in (3.5 cm) · 30 gal (115 L)68–82°F (20–28°C)
Slender rasbora
Rasbora daniconius
Freshwater3.9 in (10 cm) · 32 gal (120 L)72–81°F (22–27°C)
Cambodian log sucker
Garra cambodgiensis
Freshwater5.9 in (15 cm) · 32 gal (120 L)68–81°F (20–27°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)
Common questions
What size tank does a Humphead glassfish need?
A Humphead glassfish needs at least 32 gal (120 L). It spends most of its time in the middle.
What temperature and pH does a Humphead glassfish need?
A Humphead glassfish is comfortable at 73–81°F (23–27°C) with a pH of 7.0–7.5.
How big does a Humphead glassfish get?
An adult Humphead glassfish reaches about 3.9 in (10 cm).
Does a Humphead glassfish need a group?
Yes. A Humphead glassfish is a shoaling species and should be kept in a group, not singly.
Related species
3.1 in (8 cm)20 gal (75 L)68–86°F (20–30°C)Indian glassy fish
Parambassis ranga
3.1 in (8 cm) · 20 gal (75 L)
2.8 in (7 cm)21 gal (80 L)73–82°F (23–28°C)Siamese glassfish
Parambassis siamensis
2.8 in (7 cm) · 21 gal (80 L)
1.2 in (3 cm)11 gal (40 L)72–82°F (22–28°C)Indian amber glassfish
Parambassis lala
1.2 in (3 cm) · 11 gal (40 L)
1.6 in (4 cm)16 gal (60 L)73–81°F (23–27°C)Threadfin glassfish
Gymnochanda filamentosa
1.6 in (4 cm) · 16 gal (60 L)
1.2 in (3 cm)11 gal (40 L)75–82°F (24–28°C)Dwarf glass chanda
Gymnochanda ploegi
1.2 in (3 cm) · 11 gal (40 L)
1.2 in (3 cm)11 gal (40 L)75–82°F (24–28°C)Rose flame glassfish
Gymnochanda verae
1.2 in (3 cm) · 11 gal (40 L)
