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I heard fish can get swim bladder disease this time of year, but what is it? | Decorative Ponds & Water Gardens Q & A

Q: I heard fish can get swim bladder disease this time of year, but what is it?

Q: I heard fish can get swim bladder disease this time of year, but what is it?

Becky- Trumbell, CT

A: Many bony fish, like the fancy goldfish found in ornamental ponds, have an organ called a swim bladder. This gas-filled sack has two main purposes: It helps the fish control its buoyancy and remain at a particular depth without having to waste energy on swimming, and it keeps the fish in an upright position. When a fish is unable to control its depth, or starts swimming sideways, upside side down, or head or tail down, it may have “swim bladder disease.”

A fish with swim bladder disease can be a troubling sight to see, but it can be treated. Here’s what you need to know about what causes it and how to get your fish swimming the right way again.

Your Gluttonous Goldfish

Although intestinal parasites and microorganisms can cause swim bladder disease, it mainly stems from overeating, eating too quickly or gulping too much air during feeding time. The fish gobbles mouthfuls of pellets, which expand like sponges as they soak up water in the mouth and digestive tract leading to constipation. Enough pressure on the swim bladder will cause the fish to swim any which way but up.

Time for a Diet Change

Water temperatures dip – sometimes precipitously – in the fall, and that change can slow your fishes’ digestive processes. They have a harder time digesting protein when it’s cold, and it can build up in their gut and result in an enlarged intestine.

To prevent this from happening, switch your fish food during the fall (and spring). Using a pond thermometer, periodically check your water temperature. Once temperatures are consistently between 40°F and 50°F, change over to a lower-protein, higher-carbohydrate diet like Pond Logic® Spring and Fall Fish Food, which is packed with easier-to-digest wheat germ. Feed them two to three times a week and only give them an amount that they will eat within 5 minutes. When temperatures drop below 40°F, stop feeding them entirely.

Peas to the Rescue

The best treatment for swim bladder disease is found in your refrigerator or freezer. Frozen or cooked peas, will blast through the impaction and reduce the pressure on the fish’s swim bladder. If your fish starts floating sideways, we recommend you stop feeding them for a few days and then hand feed peas to help clear up any blockages.

Medicating fish in outdoor ponds with cooler temperatures really is not an option, as the medications won’t work – so stick with the fasting-plus-peas remedy.

If one of your fish is really stressed, a salt bath could help – but you will need to dissolve the salt in an indoor holding tank filled with warm 78 to 80ºF water. Keep in mind that when you transfer your fish from the cooler 40°-50°F outdoor water to the warmer treatment tank, that temperature change can easily shock the fish. It should be avoided.

Pond Talk: Have you ever had to treat one of your pond fish for swim bladder disease? If so, what did you do?

Easy To Digest In Low Temperatures  - Pond Logic (r) Spring & Fall Fish Food

One of my fish isn’t swimming upright. What’s wrong?| Decorative Ponds & Water Gardens Q & A

Q: One of my fish isn’t swimming upright. What’s wrong?

Q: One of my fish isn’t swimming upright. What’s wrong?

Cherie – Englewood, CO

A: Unless you’ve taught your pond fish some pretty cool party tricks, it’s possible that they’re not getting enough oxygen due to a lack of aeration.

Fish will display some odd behaviors when they’re not getting enough oxygen, including gasping for air at the surface, hanging vertically in the water, and spending a lot of time around the waterfall or stream where oxygen levels are at their highest – at least for the few hours each day when the pump is running.

Some other telltale signs of insufficient aeration are:

  • The water in your pond appears to be stagnant in certain areas
  • You’ve noticed a growing mosquito problem
  • Algae growth always seems to be a battle you can’t win
  • Muck has accumulated at the bottom of the pond

Medical issues, like swim bladder problems, could be causing your fish to swim sideways, too. But, before you take your finned pal to the veterinarian, try adding or adjusting the aeration in your water feature. You can also check your ammonia and nitrite levels using a water test kit.

If your pond has a lot of fish for its size, or is a medium or large water garden or koi pond up to 16,000 gallons in size, consider adding an Airmax® KoiAir™ Aeration Kit. Its energy-efficient design includes a dual diaphragm pump that infuses oxygen into the pond while being virtually maintenance free.

If you have a handful of fish in a smaller pond that’s up to 2,000 gallons in size, check out the Airmax® PondAir™ Aeration Kits. It’s designed for decorative ponds and water gardens, and features an airflow control valve that allows you to adjust the aeration output with the turn of a dial.

Aeration should help your fish swim upright again. But if it’s still acting strange after you’ve pumped up the oxygen, you may want to check in with your veterinarian for medical advice. Good luck!

Pond Talk: What’s the strangest thing you’ve seen your pond fish do?

Water Testing System For Ponds - PondCare(r) Master Test Kit

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