# Only 2 two taxa from 18S taxa barplot

**URL:** https://forum.qiime2.org/t/only-2-two-taxa-from-18s-taxa-barplot/30891
**Category:** User Support
**Created:** [July 20, 2024, 4:30pm UTC](https://forum.qiime2.org/t/only-2-two-taxa-from-18s-taxa-barplot/30891 "2024-07-20T16:30:37Z")
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### Author: ![Mike\_Stevenson](https://forum.qiime2.org/user_avatar/forum.qiime2.org/mike_stevenson/32/18913_2.png) [@Mike\_Stevenson](https://forum.qiime2.org/u/Mike_Stevenson)
#### Post date: [July 22, 2024, 10:30am UTC](https://forum.qiime2.org/t/only-2-two-taxa-from-18s-taxa-barplot/30891/3 "2024-07-22T10:30:55Z")

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Hi @Namraj_Jaishi

The Silva database includes both 16S and 18S reads as stated by @colinbrislawn in the post linked below, so you should be able to train an 18S classifier using that database.

[Qiime2 18S workflow](https://forum.qiime2.org/t/qiime2-18s-workflow/12175)

However, should you wish to use an alternative to Silva, there is a database called Protist Ribosomal Reference database, which is a SSU rRNA gene database.

[18S reference dataset](https://forum.qiime2.org/t/18s-reference-dataset/11878)

I hope that helps!

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