Indeed, Lithopoma are popular cleaners too. My friend in Coral Gables
prefers americanum and tectum over other grazers/scavengers  in his
aquaria -  many are taken in the Keys for such purposes.

On 12/6/18, Harry Lee <[log in to unmask]> wrote:
> Dear Listers,
>
> Carole Marsall has provided me with a URL
> (<http://myfwc.com/about/commission/commission-meetings/2018/december/12/agenda/?utm_content=&utm_medium=email&utm_name=&utm_source=govdelivery&utm_term=campaign>),
>
> which details the venue/agenda for the two days of hearings including
> that dealing with the collecting ban at Phil Foster State Park/Blue
> Heron Bridge(BHB), which she has discussed in this forum. At this site,
> links are provided to three relevant documents dedicated to the proposed
> BHB regulations:
>
>   * An introduction/summary ("Memorandum')
>     <http://myfwc.com/media/4520298/5B-SM-BlueHeronBridgeDR.pdf>,
>   * a pdf presentation <myfwc.com/media/4520386/5B-BlueHeronBridge.pdf>,
> and
>   * the proposed rule language:
>     <http://myfwc.com/media/4520386/5B-BlueHeronBridge.pdf>.
>
> The first two discuss prohibiting the collecting of "Marine Life
> species," but draft legislation uses the term "tropical ornamental
> marine life species." Despite the draconian implications of the former
> designation, presumably the two entities have the same legal
> (enforcement) definition as presented at the FFWCC webfeature
> <https://www.flrules.org/gateway/RuleNo.asp?title=MARINE%20LIFE&ID=68B-42.001/>
>
> /and includes only these five (group) molluscan taxa [my clarifications]:
>
>   * /Lithopoma americanum/,/L. tectum/, and /Astralium/ [sic; now
>     also/Lithopoma/] /phoebium/
>   * Opisthobranchia
>   * /Lima /[sic; presumably Limidae]
>   * /Octopoda /exclusive of/Octopodus/ [sic; lapsus pro
>     //Octopus//]///vulgaris/
>   * Nassarius snails- Any species of the genus/Nassarius /[sic;
>     presumably /Phrontis /as per Galindo /et al./ (2015, 2016) and WoRMS
>     <http://www.marinespecies.org/aphia.php?p=taxdetails&id=560406>]
>
> //Galindo, L.A., N. Puillandre, J. Utge, P. Lozouet, and P. Bouchet,
> 2015. The phylogeny and systematics of the Nassariidae revisited
> (Gastropoda, Buccinoidea). /Molecular Phylogenetics and Evolution./
> Unpaginated pre-print: <http://dx.doi.org/10.1016/j.ympev.2016.03.019>
> at least /in partim/.
> Galindo, L.A., N. Puillandre, J. Utge, P. Lozouet, and P. Bouchet, 2016.
> The phylogeny and systematics of the Nassariidae revisited (Gastropoda,
> Buccinoidea). /Molecular Phylogenetics and Evolution 99/: 337-353.
> On-line 21 March.
>
> Harry
>
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