Bagelfish

As of this point, there are two known species going by the name of bagelfish. Both species originate from an alternate Earth that never developed land-dwelling life, with intelligent life developing in the ocean. However, instead of a singular equivalent to Bagel the cat, this world has two entire species that evolved as his counterparts.

The two species share an orange/ginger colour and a genetic tendency to go blind in their right eye. However, that is all that they have in common; as shown below, they aren't even in the same genus. (The OOC reason for this is to parody the "dire beast" trend in fantasy, popularised by D&D, in which any animal can have a "dire" version that is considerably larger and more badass than the normal version.)

Common bagelfish
The common bagelfish (Pescifelis bagelis, "Bagel's fish-cat") is a round species of fish, so named due to its body resembling a bagel - albeit a fairly large one, as fully-grown bagelfish have been known to achieve a total body length of 60cm (23.5in).

Common bagelfish are omnivorous, subsisting on a diet of plant matter, crustaceans and insects. They have also been observed hunting mice in captivity.

This species has been domesticated, with the resulting subspecies being named the domestic bagelfish (Pescifelis bagelis domesticus). Domestic bagelfish are often kept in ponds, due to being too large to be kept in a typical household aquarium, although work is reportedly being done to create a breed of domestic bagelfish small enough for aquarium-bound life.

Dire bagelfish
The dire bagelfish (Fulgurperedis bagelis dirus, "dire Bagel's lightning-eater"), also known as the lightning-eater, is a large carnivorous species of fish and an apex predator in its homeworld. A typical adult dire bagelfish is 6 to 8 metres (20-26 ft) long, with a streamlined body covered in bony armoured plates and sharp teeth designed to grip and hold on to prey, complemented by a powerful jaw.

The dire bagelfish earned its name of "lightning-eater" due to their innate immunity to the harmful effects of electricity, allowing them to survive a direct hit from a lightning bolt with no ill effect. In fact, the dire bagelfish's body is a living electrical battery, able to store high-powered electrical charges. This is used as a defense mechanism should a threat display and biting fail to be enough to drive away an attacker. The dire bagelfish discharges high-voltage electricity into the surrounding area, enough to seriously damage if not outright kill any nearby living things and/or electrical equipment. (They avoid doing so when fighting another dire bagelfish, as though aware that this would be useless at best. This may be a sign of intelligence.)

It should be noted that despite their intimidating appearance, territorial nature, and danger in their natural environment, the dire bagelfish is ultimately an animal driven by instinct. It is possible to ward off dire bagelfish without directly harming them.