Halfbeak Care Guide
The Halfbeak is an unusual and fascinating tropical freshwater fish popular among specialist aquarists in the UK. Known for its elongated lower jaw and surface-dwelling behaviour, it's an eye-catching addition to peaceful planted aquariums.
In this guide, you'll learn everything you need to know about Halfbeak care, including tank size, water conditions, compatibility, feeding, and typical UK prices - plus how to buy or sell them locally.
Quick facts about Halfbeaks
Halfbeaks are slender livebearing fish native to Southeast Asia. Their distinctive appearance comes from their extended lower jaw, which they use to feed from the water's surface.
Popular aquarium species include the wrestling halfbeak and Celebes halfbeak.
Various species (commonly Dermogenys spp. and Nomorhamphus spp.)
5-10 cm depending on species
Southeast Asia
75L (20gal)
3-5 years
Peaceful to mildly territorial
24-28°C
Carnivore/omnivore (small live, frozen, floating foods)
7.0-8.0
£5-£15 per fish
How Many Halfbeaks Should You Keep?
Halfbeaks are social fish and generally do best in groups.
- A minimum group of 5-6 is recommended
- Keep more females than males
- Provide plenty of surface space and cover
Keeping too many males together can lead to:
- Surface-level aggression
- Chasing behaviour
- Stress and injury
They are most comfortable in calm, lightly stocked aquariums.
Ideal Tank Conditions for Halfbeaks
Providing the right environment helps halfbeaks display natural behaviour and reduce stress.
- Tank Setup: Calm aquarium with open surface swimming space
- Substrate: Sand or gravel substrate
- Plants & Decor: Floating plants, driftwood, and planted edges
- Water Conditions: Stable freshwater with good oxygenation
- Filtration & Flow: Gentle filtration and minimal surface turbulence
- Lighting: Moderate lighting
A tightly fitting lid is essential, as halfbeaks are excellent jumpers.
Compatibility with Other Fish
Halfbeaks are peaceful and suitable for calm community aquariums.
- Good Tankmates: rasboras, peaceful tetras, kuhli loaches, corydoras catfish, and small gouramis
- Avoid: aggressive fish, fin-nippers, and highly active surface feeders
They spend most of their time near the surface.
Are Halfbeaks Easy to Care For?
Halfbeaks are moderately easy to care for and suitable for aquarists with some experience.
They require:
- Stable water quality
- Calm tank conditions
- Secure lids
- Appropriate floating foods
They can be shy and sensitive to stress.
Halfbeak Price in the UK
In the UK, halfbeaks typically cost between £5-£15 per fish.
Prices vary depending on:
- Species and rarity
- Size and sex
- Availability
- Shop vs hobbyist sellers
Some rarer species may cost significantly more.
Where to Buy Halfbeaks in the UK
Halfbeaks are available from specialist aquarium shops and hobbyist breeders.
Sourcing fish locally can:
- Reduce transport stress
- Allow you to assess health and activity
- Offer better value
TankMate UK helps connect fishkeepers who want to buy, sell, or rehome fish safely - without shipping.
Can You Sell Halfbeaks?
Yes - halfbeaks are occasionally bred and sold by specialist hobbyists.
Selling locally is often the best option, as it:
- Minimises stress for the fish
- Avoids the risks of shipping
- Helps preserve healthy breeding groups
TankMate UK allows you to list fish quickly and find local buyers.
Feeding Halfbeaks
Halfbeaks are surface feeders and prefer floating foods.
Key Tips
- Feed floating micro pellets or flakes
- Supplement with live or frozen foods such as mosquito larvae, daphnia, and brine shrimp
- Feed small portions 1-2 times daily
- Ensure food remains near the surface
They are excellent hunters of small live foods.
Common Problems with Halfbeaks
Jumping from tanks, often caused by:
- Open-top aquariums
- Stress or sudden movement
Aggression between males, linked to:
- Small tank sizes
- Too few females
Poor feeding response, caused by:
- Sinking foods
- Competition from fast surface feeders
Why Halfbeaks Are So Popular
- Unique elongated jaw shape
- Interesting surface-dwelling behaviour
- Ideal for planted aquariums
- Unusual alternative to common livebearers
- Active and fascinating feeders
When kept correctly, halfbeaks add unusual movement and personality to peaceful tropical aquariums.
Frequently Asked Questions
They are generally peaceful but males can be territorial with each other.
Yes, they are excellent jumpers and require secure lids.
Yes, with peaceful fish that won't outcompete them for food.
At least 75 litres, with calm surface areas and floating plants.
Looking to Buy or Sell Halfbeaks Locally?
TankMate UK connects fishkeepers who want to buy, sell, or rehome fish safely within their local area.
Whether you're adding unusual surface-dwelling fish to your aquarium or passing fish on to a new home, you can:
- Browse fish available near you
- List your own fish in minutes
- Avoid the risks of shipping
Explore local listings with TankMate UK and find the right fish for your aquarium.