Goldfish Swim Bladder Disease: Causes and Treatment
Few sights in fish keeping land harder than a goldfish that cannot swim level. Yesterday it cruised the tank; today it bobs at…
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Oranda Goldfish Care Guide: Wen, Tank Setup & Feeding
Somewhere around its first birthday, a young oranda does something that panics new keepers. A soft lump appears on top of its head,…
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Best Filter for Goldfish Tanks: Types, Sizing, and Maintenance
Ask experienced goldfish keepers what matters most and filtration comes up within the first minute. Goldfish eat constantly, produce a heavy waste load,…
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How to Cycle a Goldfish Tank: The Complete Fishless Guide
The most common way a goldfish’s life goes wrong happens before the fish ever comes home. The tank gets bought, filled, and stocked…
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Ranchu Goldfish Care Guide: Tank, Feeding & Health
Every goldfish swims by rowing with its tail and steadying itself with the fin along its back. Every goldfish, that is, except the…
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Black Moor Goldfish Care: Tank Setup, Eyes & Feeding
Plenty of goldfish are pretty. Only one looks back at you through a pair of binoculars, and the black moor’s protruding telescope eyes…
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Fantail Goldfish Care Guide: Tank, Diet & Health
Ask someone to picture a fancy goldfish and they will describe a fantail: a round little body and a big double tail fanning…
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Male vs Female Goldfish: 5 Ways to Tell Them Apart
Sooner or later every goldfish keeper leans on the glass and asks it: are you a boy or a girl? The fish, unhelpfully,…
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Goldfish Ich Treatment: White Spot Disease Guide
Few things ruin an evening of watching the tank faster than tiny white dots scattered across a goldfish, like grains of salt stuck…
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Goldfish Fin Rot Treatment: Causes and Healing
Fins are supposed to be flowing and whole, so ragged, shrinking edges stand out the moment you look at the tank. Fin rot…
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Why Is My Goldfish Turning Black? Causes Explained
Black patches spreading across a goldfish can look like the start of something dreadful, especially when they arrive over a few days. Your…
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Goldfish Laying on Bottom of Tank: Causes and Fixes
A goldfish parked on the gravel, motionless, is a worrying sight in a fish that used to meet you at the glass. Bottom-sitting…
