Like every rose has its thorn, the fangblenny is an adorable fish with sharp fangs and potent venom. But scientists think we might be able to use their venom as a painkiller! Meanwhile, a killer bacterium could be a promising new antibiotic.

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Sources:
Fangblenny
http://www.cell.com/current-biology/fulltext/S0960-9822(17)30269-5
https://www.eurekalert.org/emb_releases/2017-03/cp-ttl032317.php
https://www.eurekalert.org/emb_releases/2017-03/uoq-ffh031917.php
http://hl-128-171-57-22.library.manoa.hawaii.edu/bitstream/10125/396/1/v26n2-129-139.pdf
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5331446/
https://academic.oup.com/abbs/article-lookup/doi/10.1093/abbs/gmq042
https://www.jstor.org/stable/4064893

Predatory bacteria
http://www.cell.com/biophysj/fulltext/S0006-3495(17)30218-7
https://www.eurekalert.org/emb_releases/2017-03/cp-hbh032317.php
https://www.ncbi.nlm.nih.gov/pubmed/19575566
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3917220/

Image Sources:
https://www.dropbox.com/sh/qoustbp7yopzglm/AAD-ZyTJUtZeF5uMo_UcmkFRa?dl=0
https://commons.wikimedia.org/wiki/File:Slice_from_electron_cryotomogram_of_Bdellovibrio_bacteriovorus_cell.jpg
https://www.eurekalert.org/multimedia/pub/136343.php