Mosquito Rasbora Boraras Brigittae 2cm
Image for illustration purposes only. Exact colours, patterns, and size may vary between individuals.
Delivered alive, guaranteed
Live fish delivery is £20 per order, delivered Thursday, Friday or Saturday, arriving before 1:00pm on the day you choose at checkout. Packed by aquatic specialists and shipped overnight with a dedicated livestock courier, every fish is covered by our Live Arrival Guarantee with automatic refunds. See How Live Fish Delivery Works for full details.
When will my fish arrive?
| Order placed | Delivery day |
|---|---|
| Up to Monday 11:00am | Thursday (that week) |
| Monday after 11:00am – Tuesday 11:00am | Friday (that week) |
| Tuesday after 11:00am – Wednesday 11:00am | Saturday (that week) |
| Wednesday after 11:00am – Sunday (any time) | Thursday (following week) |
Overview
The Mosquito Rasbora is one of the smallest and reddest aquarium fish, a deep crimson nano shoaler with a dark lateral bar. It is endemic to blackwater peat swamps of south-western Borneo, Indonesia. It suits mature, softwater nano and planted tanks alongside shrimp and other tiny, peaceful fish.
- Adult Size: Around 2 cm (0.8 in)
- Lifespan: 4–8 years
Origin
- Native to: South-western Borneo, Indonesia
- Habitat: Dim, acidic blackwater streams and peat swamps
Feeding
- Diet: Omnivorous micropredator
- Preferred Foods: Daphnia, baby brine shrimp, microworms, crushed flake, micro granules
- Feeding Habits: Small feeds twice daily; foods must be tiny
Tank Mates
- Best with: Other Boraras, ember tetras, pygmy corydoras, dwarf shrimp, nerite snails
- Avoid: Anything large enough to eat them; boisterous fish
Aggression & Behaviour
- Temperament: Very peaceful and timid
- Territoriality: None; males spar harmlessly
Experience Level
- Difficulty: Intermediate
- Challenges: Tiny size, needs stable mature water and micro foods
Water Parameters
- Water Type: Freshwater, soft and acidic
- Temperature: 20–28°C (68–82°F)
- pH: 4.0–7.0
- Hardness: 1–10 dGH
- Flow: Slow, sponge filter ideal
- Tank Size: Minimum 40 litres for a group of 8–10 or more
Final Notes
Colour only develops fully in a group of ten or more kept over dark substrate with leaf litter, gentle sponge filtration and dim, planted surroundings. Add to a mature tank and acclimatise slowly; sudden parameter swings are the main risk. Continuous egg-scatterers with no parental care; females are rounder and slightly larger. In the right blackwater setup they glow like embers.
Please Note
The livestock that is sold on our online site is not held in store at our Birchwood Aquatic Centre shop. Species sold at the Birchwood Aquatic Centre physical store may differ from ones available to order to your door.
Frequently Asked Questions
In insulated boxes designed for live transport, packed by aquatic specialists,
overnight with a licensed live-animal courier, arriving before 1pm.
It is covered by our Live Arrival Guarantee.
Photograph it within 4 hours of delivery, email info@birchwoodaquaticcentre.co.uk with your order number, and the refund is processed automatically. The cover continues for 7 days after arrival.
Wednesday, Thursday, Friday and Saturday. You pick your day at checkout; please choose a day someone is home.
Yes. One basket, one checkout; the fish arrive with the specialist courier and the rest of your order ships as normal.
We can deliver to UK mainland only for live fish.
Follow the five-minute acclimatisation steps in our When Your Fish Arrive guide: float the bags, add tank water gradually, net the fish in, lights low, feed tomorrow.