Skip to main content

TropicalFish Co

Aqua, our AI assistant

How Aqua works
Talk or type, day or night
What it can do
Orders, delivery dates, stock and care advice
Ways to reach us
Website, WhatsApp, phone and text
What it will never do
The boundaries we set, in plain English

Customer service

Contact us
Every way to reach a real person
Delivery & dispatch days
Wednesday dispatch, Thursday delivery
Returns & live arrival
Our guarantee and how to claim
FAQ
The questions we get asked most

Just ask Aqua

“Where is my order?”
It reads your live order status
“Do you deliver to me?”
Postcode checked before you buy
“Which fish suit my tank?”
Stocking, tank mates and water
“Something arrived wrong”
Send a photo or video on WhatsApp

Care Guides

Betta Fish
Tank setup, feeding, and health
Discus
Advanced care for the king of freshwater
Guppy
Easy, colourful livebearers
Neon Tetra
The classic beginner schooling fish
Cardinal Tetra
Brighter cousin of the neon
Cherry Shrimp
Hardy shrimp for planted tanks

Beginner Guides

First Tropical Tank
Your complete starter guide
Water Chemistry
pH, GH, KH explained
Live Plants
Easy plants for new aquascapers
Shrimp Keeping
Getting started with freshwater shrimp
Cichlid Care
Basics for all cichlid types
View All Care Guides
Browse the full collection

Species & Buying Guides

Oscar Fish
Tank size, diet & temperament
Guppy Types
Colour and fin-form overview
Angelfish
Evidence-checked care and tank planning
Corydoras
Species choice, group size, tank setup and feeding
Tetras for Sale
Browse live tetra availability
Browse the full guide library
Every species & buying guide we've written

Aquarium Tools

Stocking Calculator
Plan your fish numbers
Water Parameter Matcher
Match species to your water
Tank Volume Calculator
Calculate litres from dimensions
Nitrogen Cycle Tracker
Track your fishless cycle
Tank Mate Checker
Check species compatibility
Acclimation Timer
Guided drip acclimation

Tropical Fish Co

Live fish, aquarium food and specialist supplies for UK hobbyists, with practical product guidance and cited care resources from aquarists.

Delivery information & support

hello@tropicalfishco.co.uk

20 Wenlock Road, London, N1 7GU

WhatsApp: +44 7414 129920

Follow us

Instagram (@tropicalfishco.co.uk)
Facebook (Tropical Fish Co)
TikTok (@tropicalfishuk)
YouTube (@tropicalfishInUK)

Shop

Tropical Fish for Sale
Freshwater Fish
Coldwater Fish
Marine Fish
Shrimps & Inverts
Fish Food
Accessories
Deals

Popular Fish

Betta Fish for Sale
Angelfish for Sale
Guppies for Sale
Cherry Shrimp for Sale
Nerite Snails for Sale
Bristlenose Pleco for Sale
Corydoras for Sale
Discus for Sale
African Cichlids for Sale

Learn

Buying Guides
Care Guides
Blog
First tropical tank
Nitrogen cycle
Water chemistry
Our editorial method
Meet the team

Free Tools

Stocking calculator
Tank mate checker
Water matcher
Cycle tracker
Tank volume
Acclimation timer
Care planner
All free tools

Help & Legal

Delivery Info
About Us
Contact
FAQ
Terms & Conditions
Privacy Policy
Returns Policy

© 2026 Tropical Fish Co. All rights reserved. Hand on Web Ltd, registered in England & Wales.

Web design, SEO & AI by Hand On Web Ltd, Chester.

Home
Fresh Water Fish
South American Tetra
Serrasalmus

Serrasalmus

1 product available

Serrasalmus for sale UK at Tropical Fish Co — Red-Bellied Piranha and more. Live Arrival Guarantee + careful UK dispatch.

Current delivery and offer information

Follow each link for the latest terms before ordering.

Arrival guaranteeLive Arrival GuaranteeRead the current claim and evidence terms.Specialist deliverySpecialist live-animal deliverySee current price, postcode coverage and dispatch information.First-order offerCurrent first-order offerCheck the offers page for active terms.1 in stock1 in stockBrowse the current in-stock catalogue.

1 products

representative illustration of a juvenile Red-Bellied Piranha in an aquarium

Red-Bellied Piranha (Pygocentrus nattereri)

23–27°C · pH 5.5–7.5 · 380L