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Betta splendens

Betta spl. female plakat galaxy - Betta Fish for Sale UK

Beginner Friendly
Semi-Aggressive
£27.99Sold Out

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Live arrival guaranteed. If they don’t arrive healthy, email us a short unboxing video the same day for a replacement or refund. Packed in oxygenated bags with insulation and heat packs when needed.
£19.95 tracked delivery — half price (£9.98) from £100.00, free from £200.00. One delivery charge however many fish you add — everything travels together with a licensed live-animal courier.
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A hardy, jewel-toned female plakat betta with galaxy patterning, prized for its vivid color and active personality. Easy care, semi-aggressive. 24-30C, pH 6.0-7.5.

Care at a Glance

Scientific Name
Betta splendens
Max Adult Size
up to 6.5 cm
Lifespan
3 years
Care Level
Easy
Temperament
Semi-aggressive
Temperature
24–30°C
pH Range
6–7.5
Hardness
1–15 dGH
Minimum Tank
20L
Diet
Carnivore

Adult size is the maximum length this species reaches at full maturity (scientific sources). The livestock you receive will be younger and smaller. Product-photo provenance and any image-specific limitations are stated on the listing.

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Blue and red male Betta splendens swimming side-on in an aquarium
Full Care Guide

Betta Fish Care Guide: Siamese Fighting Fish

For one typical domestic Betta splendens, start with at least 20 litres, a mature filter, thermostatic heater, separate thermometer, gentle flow, a secure lid with surface access, and plants or refuges. Keep one male per aquarium.

13 min readRead guide

Water Parameters

Maintain these water conditions for optimal health and vibrant colors

Temperature
24–30°C
24°CIdeal30°C
pH Level
6–7.5
6Ideal7.5
Water Hardness
1–15 dGH
1 dGHIdeal15 dGH

Galaxy patterning scatters pale, star-like speckles over a dark marbled base, and on this short-finned plakat female the night-sky effect covers a quick, hardy 6.5 cm fish rated easy care. Plakat females are the most practical bettas we sell, and the galaxy colourway makes this one the rare practical choice that is also a conversation piece.

Her social rules start from best kept alone. Small peaceful snails are the dependable exception, and shrimp may be compatible in heavily planted tanks while remaining huntable. Her avoid list names other bettas, fin-nipping fish, aggressive or highly territorial species, large boisterous fish, and long-finned tank mates whose flowing fins read as a challenge. From there the keeping is simple: a 20-litre minimum, water between 24 and 30 °C, pH 6.0–7.5, hardness 1–15 dGH, and carnivore feeding — numbers that suit a first heated aquarium without compromise. She lives in the upper portion of the tank, active and inquisitive, with the species' territorial side mostly dormant outside breeding condition. Each galaxy female's speckling is individual, and the marble base can continue developing as she ages.

Galaxy females are bought for the pattern and kept for the temperament: easy-rated, robust in her short plakat form, and content from 20 litres with a heater anywhere in the 24–30 °C band. Her carnivore feeding and weekly maintenance inside pH 6.0–7.5 and 1–15 dGH complete a genuinely beginner-proof care sheet. The speckling is where the interest compounds — marble-based patterns can keep developing for the fish's whole life, so the constellation she arrives with is an opening position, not a final state. Keep a photo record if that appeals. Her best-kept-alone default plus snails covers most owners; the planted-tank shrimp experiment her record permits is for keepers who accept losses.

Galaxy plakat female: care basics

  • About 6.5 cm adult length
  • Lifespan approximately 3 years
  • Easy to care for
  • Semi-aggressive temperament
  • 24–30 °C
  • pH 6.0–7.5
  • Hardness 1–15 dGH
  • 20 litres and upward
  • Carnivore
  • Upper-water swimmer

Buying note

Speckle density varies fish to fish; yours will wear her own constellation. Despatched with a licensed live-animal courier and covered by our live arrival guarantee throughout the UK.

Customer Reviews

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What customers say about ordering from us

  • 4 out of 5Verified buyer

    I have a small group of long finned mountain minnows. So was delighted to be able to order ten of this variety to increase the genetics in my tank . The ones I recieved are healthy but it’s to early to give a verdict on wether they are of a long finned type since they are small currently.

    Gordon Walker · 23 Sept 2026

  • 5 out of 5Verified buyer

    100% success travel and "installation". Pleased with quality of purchase. The Siamese fighter a bit "shy" so have not yet seen him at his best yet but looking good. Happy customer. GG

    George E Garratt · 21 Sept 2026

Reviews of our shop, collected by Judge.me, an independent third-party review collector. Newest first.