The blackspotted numbfish grows to a maximum length of 38 cm.

It may be synonymous with the blackspotted numbfish, Narcine maculata.

Another example is the numbfish which Pliny the Elder wrote about in the first century AD.

The brownband numbfish (Diplobatis guamachensis) is a species of fish in the Narcinidae family.

The numbfish, which Pliny the Elder recorded in the first century AD, are now known as electric rays.

Narcine brunnea (Brown numbfish)

Narcine lingula (Chinese numbfish)

Diplobatis guamachensis (Brownband numbfish)

Narcine maculata (Darkfinned numbfish)

Narcine nelsoni (Eastern Numbfish)

Narcine prodorsalis (Tonkin numbfish)

Narcine tasmaniensis (Tasmanian numbfish)

Narcine timlei (Blackspotted numbfish)

Narcine westraliensis (Banded numbfish)

Perhaps the best known members are those of the genus Torpedo, also called crampfish and numbfish, after which the device called a torpedo is named.

Other common names for this species include common crampfish, marbled torpedo, numbfish, and spotted torpedo.

This species may also be referred to as crampfish, electric ray, numbfish, numbie, short-tail electric ray, or torpedo.

Other common names include Atlantic electric ray, Atlantic New British torpedo, black torpedo, crampfish, electric ray, numbfish, or torpedo.

The onefin electric ray or Cape numbfish (Narke capensis) is a common but little-known species of electric ray in the family Narkidae, native to South Africa and Namibia.

The giant electric ray or Cortez electric ray, Narcine entemedor, is a species of numbfish, family Narcinidae, native to the eastern Pacific Ocean from the Gulf of California to Panama.

The lesser electric ray (Narcine bancroftii), also known as the Brazilian electric ray, small electric ray, spotted torpedo ray, torpedofish or trembler, is a species of numbfish in the family Narcinidae.

The painted electric ray or variegated electric ray, Diplobatis pictus (sometimes misspelled picta), is a poorly known species of numbfish, family Narcinidae, native to the western Atlantic Ocean from southeastern Venezuela to the mouth of the Amazon River in Brazil.