I feel the specimen looks to thick to be fatf. I've seen smal vatf with easily visible stripes so I wouldn't say none have striping or to not pay mind to that. Head shape is why I ruled out batf as well. Don't believe fatf had an underbite either but I suppose variation is possible. You guys are forgetting to check the adipose, color is opposite of brevis, brevis would be grey on outside, outside is black inside is grey or clearing this specimen. For fatf, entire adipose is grey. Adipose is important in ID for all species I find. Look at payara. Carries over to cats, look at wyckioides vs wyckii or nemurus etc. one thing you guys didn't mention is why I ruled out batf and fatf. I think it's thick for a juvie which also hints away from fatf. So again not tatf or gatf so, vatf variant imo. But who am I lol