Just listened to the YouTube videos linked by Joe Offer in an earlier post on this thread.
For the record, Father Bob had us sing it A WHOLE LOT FASTER ...

now, I sniffed around online and
there is an album, "Après Ski," from 2008 or 2009
which is a European MegaMix greatest hits collection of some kind.
One of them is "Kleiner Hai" and the artist
is identified as "Joy Lilli,"
this is a name that connects to this tune and no other --
nothing else in a Google search.

The record label, according to Amazon which lists the recording, is
BGM Productions.

The Amazon page lists sixteen songs/tracks, a different artist for each.
"Kleiner Hai" is track no. 8.

Here's a sample of others:

Du hast den schönsten Arsch der Welt, feat. Mazz

Schneewalzer - Wir sind die Meister, feat. Die wilden Buben

Schunkel Walzer Medley (Kleine-Kneipe-Mix), feat. Die Inselfeger

Sie liebt den DJ, feat. John Wendlow

Ü 30, feat. Joe Dankel

I guess that gives an idea.