I found this article to be super useful and over 10 years of keeping cichla, i just learned something new. Cichla Temensis ( Speckled Peacock Bass ) actually grow slower at higher temps. This article can be difficult to read if you dont understand a lot of this scientific form, But scroll through and it will make sense.
Here is the link
https://academic.oup.com/naja/article/84/4/486/7816451
Here is the link
https://academic.oup.com/naja/article/84/4/486/7816451