The number of exotic freshwater ornamental fish species released from the aquarium trade in Iran has been increasing in recent years. All recorded exotic aquarium fishes are listed here, including 8 species in 7 genera, 5 families, and 5 orders. The introduced species belong to the Neotropical, Nearctic and Palearctic fish elements. Their distribution ranges within Iranian freshwater ecosystems are given, and the presence of Koi (ornamental Cyprinus carpio) are recorded for the first time from Iranian inland waters. Eradication programs need to be accompanied by a public awareness campaign to ensure that the aquarium trade and hobbyists do not release these pet fishes into natural habitats.

Herpetology in Iran is alive and well and experiencing an unprecedented period of productivity. Consequently, in recent years there have been several books dealing with the reptiles of Iran. Among these are works by Rastegar-Pouyani et al. (2007), Kamali (2017) and Rajabizadeh (2018). Although each of these makes a valuable contribution, these books were published in Farsi only, limiting their usefulness to those outside of Iran

The number of exotic freshwater ornamental fish species released from the aquarium trade in Iran has been increasing in recent years. All recorded exotic aquarium fishes are listed here, including 8 species in 7 genera, 5 families, and 5 orders. The introduced species belong to the Neotropical, Nearctic and Palearctic fish elements. Their distribution ranges within Iranian freshwater ecosystems are given, and the presence of Koi (ornamental Cyprinus carpio) are recorded for the first time from Iranian inland waters. Eradication programs need to be accompanied by a public awareness campaign to ensure that the aquarium trade and hobbyists do not release these pet fishes into natural habitats.

In the present study, we studied the development and morphology of different larval stages of Pelophylax bedriagae (Camerano) at two rearing temperatures (20 and 24 °C). Eggs were collected from a breeding site in western Iran. Diagnostic morphological characters are provided for Gosner (1960) larval stages 1–46. The larvae hatched about seven days after egg deposition in the laboratory. A principal diagnostic feature, the formation of the funnel-shaped oral disc, became discernible about ten days after hatching at Gosner stage 21 and degenerated at Gosner stage 42. Based on our results, the longest metamorphosis time was observed at 20 °C whilst the shortest metamorphosis time occurred at 24 °C. The largest body length of larval P. bedriagae measured about 54 mm in 70 days after egg deposition. Compared with the majority of other Palearctic anurans, it appears that embryonic and larval development is usually slow in P. bedriagae.