pet care & health
Stress in aquatic pets
Let’ s debunk the myth. Healthy fish aren’ t“ low-maintenance”. From water chemistry and filtration to feeding, social needs, and tankmates, every detail matters.
By Dr Dorianne Elliott, Avian and Exotic Animal veterinarian at Valley Farm Animal Hospital
All too often, aquatic pets such as fish are considered“ simple” or even“ disposable”. In reality, keeping them successfully and ethically is a complex, timeconsuming hobby.
Water chemistry and filtration
Fish release all their waste into the water, which can quickly reach toxic levels if unmanaged. Specialised filtration is essential to remove organic matter and provide a surface for beneficial bacteria to process waste through the nitrogen cycle.
Cycling a new aquarium
The nitrogen cycle takes two to three weeks to mature. Never introduce fish immediately to a new tank, as immature filters cannot handle waste, leading to poor water conditions. Patience at this stage is critical for a healthy environment.
Maintaining water quality
Even with filtration, nitrates remain, requiring regular partial water changes – typically 30 % each week. Tap water should be treated to remove chlorine, which is highly toxic to fish. Other water parameters to monitor include temperature, pH, hardness, and total dissolved solids.
Choosing the right fish
Research their environmental needs before purchasing. Tropical fish and goldfish, for example, require different temperatures. Some fish need soft water, others hard. Live plants help absorb nitrates and provide enrichment, hiding spots, and food.
Social needs and compatibility
Placing fish in inappropriate environments or with incompatible
Feeding and avoiding overfeeding
Overfeeding is a common cause of poor water quality. Feed only twice daily, and what fish can eat in two to three minutes to prevent excess food from decomposing and causing toxicity.
To conclude, aquarium keeping is a growing and rewarding hobby. By following these steps, monitoring water quality, and doing some extra reading, you can maintain a healthy, stress-free environment for your aquatic pets. Happy fish-keeping! tankmates causes stress and can be fatal. Some species thrive in groups; while others should be kept on their own. A fish store can guide suitable choices.
Signs of stress and illness
Knowing normal species behaviour is key. Signs of stress include pale colours, bloating, skin abnormalities, hiding, unusual swimming patterns, clamped fins,“ flashing”( rapidly rubbing, scratching, or darting against hard surfaces to dislodge irritants) or loss of appetite.
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