| 1 | Collection: verified presence | At least one specimen from Adriatic is stored in public collection with published reference. |
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| 2 | Publication: evidence from photo | No stored specimens. The species can be positively identified just from the provided photo from the Adriatic locality given in the published record. |
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| 3 | Publication: evidence from morphological or genetic data | No stored specimens. The species can be positively identified just from the described morphology and/or genetics from the Adriatic locality given in the published record. |
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| 4 | Publication: expert providing individual collecting data | No stored specimens or morphological or genetic evidence published. However, species citations can be traced back through publications to the author that is/was expert for the taxon or for the fish guild of particular habitat, who provided the data in a paper on the locality and date of the personal collecting of specimen(s) in the paper so it should be expected that species were identified correctly. |
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| 5 | Publication: expert performing broad study | No stored specimens or morphological or genetic evidence published. However, species citations can be traced back through publications to an author that is/was expert for the taxon or for the fish guild of a particular habitat and who reported numerous findings or, in a study on ecology or species biology, numerous specimens, so it should be expected that species were identified correctly. |
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| Unconfirmed |
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| 6 | Collection: presence not verified | The specimen is stored in public collection with doubtful Adriatic locality. |
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| 7 | Collection: presence not verified | The specimen stored in public collection was lost and its published morphology is contradictory to the assigned species identity. |
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| 8 | Publication: evidence present but data insufficient | No stored specimens. The species cannot be positively identified from the photo in a published record from Adriatic. |
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| 9 | Publication: evidence present but data insufficient | No stored specimens. The species cannot be positively identified from the morphology recorded (i.e. described morphometric, meristic or qualitative characters) in a published record from Adriatic. |
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| 10 | Publication: expert omitted to provide collecting data | No stored specimens or morphological or genetic evidence published. The species citation can be traced back through publications to the author that is/was expert for the taxon or fishes of particular habitat, but no data was published on the locality and date for the reported specimen(s). |
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| 11 | Publication: author is not expert for these fishes | No stored specimens or morphological or genetic evidence published. The species citation can be traced back to the person that is not expert for the particular taxon or fishes of a particular habitat, and who only provided data are on the locality and date. |
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| 12 | Unpublished | The record with photo and/or morphological data evidence is still unpublished or it is just mentioned in grey literature. |
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