Bassleer Biofish

Bassleer Biofish The company is developer of DR. BASSLEER BIOFISH FOOD. More to see or learn about fish diseases in his books or on Youtube or Patreon International consultancy

Dr. Gerald Bassleer has retired and does currently limited Consulting Fish Health Management as Flying Fish Doctor.

We will be available at coming Interzoo 2026, at booth of Aqua United (as usual)
04/12/2025

We will be available at coming Interzoo 2026, at booth of Aqua United (as usual)

Also my Books are available via KINDLE
03/12/2025

Also my Books are available via KINDLE

Online shopping for Kindle Store from a great selection of Nonfiction, Literature & Fiction, Foreign Languages, Business & Money, Romance, Religion & Spirituality & more at everyday low prices.

Training for aquarists, in the hobby and the business (shops/importers/exporters). The necessary information to start an...
02/12/2025

Training for aquarists, in the hobby and the business (shops/importers/exporters). The necessary information to start and maintain a good aquarium, with good filtration and healthy fish! Water chemistry, filtration, fish food and fish heatlh. As aquarium shop a necessity for your staff! Available in 2 parts: Part 1. for Beginners and Part 2. For advanced aquarists.

Get more from Expert Holistic Fish Health Advice, Diagnostics & Training on Patreon

These Corydoras jullii, catfish, has a bacterial infection that can be treated BUT you have to start before the fish is ...
01/12/2025

These Corydoras jullii, catfish, has a bacterial infection that can be treated BUT you have to start before the fish is too badly damaged.
Try to get a good antibacterial medication, most likely an antibiotic is needed= ask your vet or fish doctor pr aquarium shop for advice.
Try to find the “reason” why the fish became so sick.
Help with a functional fish food to improve ‘immunity & repair’!

These Corydoras jullii, catfish, has a bacterial infection that can be treated BUT you have to start before the fish is too badly damaged.Try to get a good a...

Save your fish! Prevent fish diseases! A guarantee for a lovely aquarium experience? You need professional literature (a...
25/11/2025

Save your fish! Prevent fish diseases! A guarantee for a lovely aquarium experience? You need professional literature (available in your language) at

Find the famous books, written by Gerald Bassleer, with the most important fish diseases containing 250 photographs; also shrimp diseases. Learn how to diagnose and treat your sick fish.

In this 9 minutes video, the fish doctor Gerald Bassleer, explains the 5 most important freshwater aquarium fish disease...
23/11/2025

In this 9 minutes video, the fish doctor Gerald Bassleer, explains the 5 most important freshwater aquarium fish diseases. He shows videos of the sick fish and his observation after examination, with the help of the microscope.
We talk about ICH or Ichthyophthirius White Spot Disease, Bacterial infection, Parasitic infection causing turbidity of skin, Oodinium, Costia, Ichthyobodo, Spironucleus or Hexamita infection, external worm infection skin flukes or Gyrodactylus.

In this 9 minutes video, the fish doctor Gerald Bassleer, explains the 5 most important freshwater aquarium fish diseases. He shows videos of the sick fish a...

Detailed training of  the identification of the most important aquarium fish diseases (freshwater & marine)  by the flyi...
21/11/2025

Detailed training of the identification of the most important aquarium fish diseases (freshwater & marine) by the flying fish doctor, Gerald Bassleer. With emphasis on correct diagnosis with detailed microscopic examination! Selected training for the VIP-Patron members with exchange of experience and samples of microscopic examination! A new online tool to become a fish doctor or more professional aquarium fish keeper.
https://www.patreon.com/collection/158483?view=expanded

Detailed training of the identification of the most important aquarium fish diseases (freshwater & marine) by the flying fish doctor, Gerald Bassleer. With...

Struggling with fish health or water quality? Our AI Fish Doctor provides expert advice on disease prevention, water man...
16/11/2025

Struggling with fish health or water quality? Our AI Fish Doctor provides expert advice on disease prevention, water management, and more—tailored to your aquarium needs!
🔹 Instant Diagnosis: Get quick, accurate solutions for your fish’s health.
🔹 Water Quality Tips: Maintain the perfect environment with AI-backed recommendations.
🔹 Expert Care for Every Species: Whether new or experienced, we've got you covered.
Your Fish’s Health, Solved by AI. Start now and keep your aquarium thriving!
For only US$ 8,-/month get a full year advice from AI Fish Doctor! 🐠🤖

Fishpathobiologist or Ichthyopathobiologist or Fish Doctor. Gerald Bassleer works with an holistic approach to solve issues with health problems, diseases or other factors that have an impact on the wellbeing and health of ornamental fish, aquarium, freshwater, marine and pond fish. I can help in th...

Join the membership to see this interesting video!In this video we show several diseased or sick Discus fish, Symphysodo...
16/11/2025

Join the membership to see this interesting video!

In this video we show several diseased or sick Discus fish, Symphysodon,
with serious damage & lesions. We show different diseases and give info on the cause, the diagnosis and suggestions for treatment

In this video we show several diseased or sick Discus fish, Symphysodon,with serious damage & lesions. We show different diseases and give info on the cause,...

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Maandag 08:00 - 17:00
Dinsdag 08:00 - 17:00
Woensdag 08:00 - 17:00
Donderdag 08:00 - 17:00
Vrijdag 08:00 - 17:00

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We have a food with pro- and prebiotics (phytobiotics, nutricaments) that helps to prevent fish diseases!

With the experience if our International consultancy we can provide a great help!