Blennies

Blenny Care: Tank Setup, Food, & Compatibility for Your First Blenny

Learn how to take care of your Blenny, tank size, diet & habitat setup. Find the right food, supplies and equipment at your neighborhood Petco.

Updated on April 9th, 2026

Fang Blenny Care Guide: Food, Tank Size, & Compatibility Tips

Learn how to care for Fang Blenny, recommended diet and aquarium setup. Find the right food, supplies and equipment at your neighborhood Petco.

Updated on April 9th, 2026

Master Small Marine Fish Care: Tank Setup, Food, & Compatibility Guide

Small Marine Fish are favorites with marine aquarists and includes a wide range of species.

Updated on April 9th, 2026

Goby Care Guide: Tank Setup, Diet & Habitat for Healthy Gobies

Learn how to care for a Goby, recommended diet & habitat setup. Find the right food, supplies & equipment at your neighborhood Petco.

Updated on April 9th, 2026

Ultimate Wrasse Care Guide: Tank Setup, Feeding, & Compatibility

Learn how to care for a wrasse, recommended diet and aquarium setup. Find wrasse for sale, supplies and equipment at your neighborhood Petco.

Updated on April 9th, 2026

What fish and supplies are best for a beginner's small tank?

Without anything to use for scale, it is hard for me to tell how big your tank is, but in general it seems very small. Also, the water that is in the tank appears very cloudy right now, so that would be the first place to start. Water quality is very important, and will make or break your ability to house and care for fish. I would recommend getting a good filter system (you can visit a local pet store to assist you with brands in your area, as I am not familiar with what you can get in India). Be sure to bring the measurements (height, length, width) of your tank, or the gallons or liters so they can tell you what capacity of filter you will need. Everything else will depend on what types of fish you get - if you plan on getting multiple fish, they will need to be small - a general rule of thumb is one square inch of fish per gallon of water. Depending on the species you get, you may need to also get a bubbler to ensure there is enough oxygen in the water for them, and you will also

What fish are compatible with clownfish in a 36 gallon reef tank?

I would suggest either a Neon Goby, Yellowline Goby or Sharknose Goby (Elactinus spp.), Court Jester Goby (Koumansetta rainfordi) also make wonderful additions, A Small Basslet of the genus Liopropoma spp. or a Royal Gramma also should work well with your existing tankmates, and lastly another great group of fishes include Shrimp Goby of the genus Stonogobiops or Amblyeleotris. For shrimp goby, one bonded pair with their commensal snapping shrimp of the genus Alpheus makes a fascinating addition to smaller marine reef aquaria.

My yellow fish has blue eyes & stays at the top. What is it?

The fish that you are describing is Apolcheilus lineatus commonly known as the Golden Wonder Killifish. By looking at the images that were attached it appears to be a male (females are typically less colorful ).

Where to buy a bristlenose pleco if Petco doesn't have them?

I would recommend to call the local pet stores (including Petco) and ask if they ever carry that species. Sometimes the fish can be out of stock. Some of the smaller fish stores can have a good variety of fish available. Best of luck!

My cichlid tank has algae, bugs, and sick fish. What's wrong?

Those could be copepods. They are typically harmless and difficult to completely eradicate. On the good side, they are a sign of a healthy tank and are useful in eating decaying matter in the aquarium. The brown algae can be due to insufficient lighting or lighting periods. You can wipe down the glass and plants, perform a partial water change and increase lighting. It can take weeks to month to resolve. Use only aged or conditioned water that is temperature matched to prevent stress or shock. Confirm stable water chemistry and quality. Make sure the water temperature is correct as well. Too warm or too cold can cause stress. Look the Jack Dempsey over for signs of injury or infection. Ich, bacterial infection or fungal infection can cause the fish too twitch or shiver. Plain aquarium salt (NOT table salt or Epsom salt) dissolved at 1 tablespoon per 5 gallons of water is a great general tonic that can reduce stress, improve gill function, treat minor infection and aid in any recover