Depending on one’s point of view, the bubble eye goldfish is either a freakish mutant, or one for the connoisseurs.  One thing everybody agrees on is that it is a very unusual goldfish.

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There are two very different fish diseases that get called ‘black spot disease.’  One is caused by healing after injury (most commonly ammonia burn), and the other is caused by a parasite that infects the intestine of birds.  This second type of black spot disease is rare in fish tanks, but more common in ponds.

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There are two very different fish diseases that get called ‘black spot disease.’  One is caused by healing after injury (most commonly ammonia burn), and the other is caused by a parasite that infects the intestine of birds.

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Here are 4 videos of 3 different artists painting goldfish using ink.  Each artist’s style is their own, but they all know the meaning of the word subtle, and give wonderful demonstrations of a steady hand.

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Compared to the familiar shape and form of a mammal brain, the fish brain is rather odd looking.  It is elongated, has distinct sections, and is much smaller that a mammal’s brain in relation to its body.  However, it does everything a fish needs it to do.

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