I'm trying to tag post #1458244 but it won't let me.

Hioshiru is an artist with a fursona.

In this case, the character featured IS Hioshiru and BELONGS TO Hioshiru but was not DRAWN BY Hioshiru.

So, I tried to tag it character:Hioshiru and copyright:Hioshiru but it just changed both tags to artist:Hioshiru

If a lot of alias/implications are like this it could screw up artists with eponymous characters

*updoot; the character is apparently named Hioshi so i fixed that, but i'd still like to add the copyright tag and not the artist tag

That's not how tags work on e621. A tag is classified as an artist / copyright / general / character tag, but there are not separate tags for each category.

If there were a character called Hioshiru, it would get a tag along the lines of hioshiru_(character), possibly with the artist tag being differentiated as such: hioshiru_(artist).

In other words, what you were trying to do was reclassify an existing tag, rather than create a new tag. The system wouldn't let you do that because the hioshiru tag has more than 100 posts.

If you had tried to do this on a tag with under 100 posts, it would have changed the classification of the tag across the board, which is not something you want to do. This is entirely separate from the alias system.

I saw that you updated your post and resolved the issue.

For future reference, if an artist has a character that does have the same name as their online handle, use charactername_(character). This practice is pretty transparent and standard. In instances where the character name is relatively common or shared with another's, use charactername_(ownername), which allows for more fine-grained searches. I believe there are other resources on the forum/wiki that go into additional detail, but I am unfortunately too busy at the moment to go and search them out.

Edit: Curse of the Ninja'd

Strongbird said:
I saw that you updated your post and resolved the issue.

For future reference, if an artist has a character that does have the same name as their online handle, use charactername_(character). This practice is pretty transparent and standard. In instances where the character name is relatively common or shared with another's, use charactername_(ownername), which allows for more fine-grained searches. I believe there are other resources on the forum/wiki that go into additional detail, but I am unfortunately too busy at the moment to go and search them out.

Edit: Curse of the Ninja'd

what i'm concerned about now is crediting the creator of the character without denoting them as the artist of the specific image

The owner of a character is usually listed in the wiki, for example Dandes Naito. Click the ? next to the character name. You can add the owner if it's not there.